Unit 4: Revision, Editing, and Mechanics

Answer: C — Option A contains a comma splice—a common error where two independent clauses are joined by only a comma without a coordinating conjunction or proper punctuation. This is exactly the type of error that must be identified and corrected during editing. Option B corrects the problem by adding the coordinating conjunction 'and.' Option C is correct because a semicolon properly joins two independent clauses. Option D is also correct because it uses a subordinate clause (beginning with 'After') followed by a comma and independent clause, which is grammatically sound. Understanding how to identify comma splices is a fundamental editing skill tested on the CLEP College Composition exam.

Answer: B — Option A is correct because it strategically enhances coherence by adding concrete specificity to an abstract explanation. The paragraph explains the general concept of crop rotation but lacks a concrete illustration that would help readers visualize the practice. Adding a specific example bridges the gap between the definition and its benefits, making the argument more persuasive and easier to follow. This represents effective revision that strengthens both clarity and persuasive power. Option B is incorrect because the final sentence does not weaken the paragraph—it actually strengthens it by acknowledging a legitimate obstacle to adoption. Far from undermining the argument, this demonstrates rhetorical sophistication by recognizing real-world barriers, which makes the pro-rotation argument more credible and nuanced. Option C is incorrect because while "concerns" is more neutral than "resistant," this revision addresses tone rather than the paragraph's structural weaknesses. The word choice change is minor and doesn't meaningfully improve coherence or persuasive impact. The paragraph's primary issue is lack of concrete exemplification, not tone. Option D is incorrect because reordering sentences this way would actually damage the logical progression. The current structure moves from definition to explanation to benefits to counterargument—a logical flow. Placing benefits before explanation would disrupt this natural order and confuse readers who haven't yet learned how crop rotation functions.

Answer: A — Option A is correct because it strengthens the causal relationship between the two sentences through both punctuation and transitional language. The semicolon elevates the relationship from mere conjunction to a more explicit logical link, while "consequently" signals that the advantage (mentioned in the first sentence) results directly from the mechanism (described in the second sentence). This revision preserves both claims and clarifies their relationship. Option B is incorrect because it eliminates the explanation entirely. While the replacement sentence is not inherently weak, it abandons the writer's original reasoning and introduces a vaguer claim about "measurable ways" without explaining what those ways are or how they create cognitive advantages. Option C is incorrect because "However" signals contrast or contradiction, not causation. Using this transition would suggest that the two sentences present opposing ideas, when in fact the second sentence explains why the first is true. This revision would confuse the reader about the writer's logical intent. Option D is incorrect because while it combines the ideas into one sentence, it eliminates the explicit statement that bilingual children have enhanced cognitive flexibility. The revision focuses only on the mechanism (code-switching) and loses the claim about advantage, thereby weakening rather than strengthening the passage's argument. Additionally, deleting the first sentence removes important comparative context (bilingual vs. monolingual).

Answer: A — Option A is correct because it strengthens the logical connection between cause and effect. The original passage states that immediacy 'comes at a cost' but then explains why in separate sentences. Combining these ideas into a single sentence with a causal connector ('because') creates tighter, more persuasive reasoning that helps readers understand the direct relationship between the benefit (immediacy) and the drawback (misunderstandings). This revision improves both coherence and persuasive impact. Option B is incorrect because moving the fifth sentence would actually weaken the passage's organization. The passage follows a logical progression: general statement about benefits, acknowledgment of drawbacks, explanation of why drawbacks occur, and illustration with examples. Moving specific examples before the explanation of the problem disrupts this logical flow. Option C is incorrect because the first sentence is not merely restative—it establishes the context and positive aspect of digital communication, which is essential for the subsequent contrast introduced by 'However.' Deleting it would make the paragraph abrupt and would lose the important setup for the argument about drawbacks. Option D is incorrect because the sixth sentence already connects logically to the previous ideas through the explanation of misinterpretations caused by missing nonverbal cues. Adding 'In addition' would suggest the sixth sentence presents a new, separate point rather than serving as a concluding illustration of the already-established problem. The connection already exists; adding a connector would be redundant and potentially confusing.

Answer: A — Sentence 3 is the correct answer because it breaks the paragraph's coherence by introducing background information about Instagram's founding that is not directly relevant to the main idea—how influencers function in modern marketing. While the sentence is factually accurate, it derails the logical flow from defining influencers (sentences 1-2) to discussing their marketing role (sentences 4-5). The other options are incorrect because: B) Sentence 1 appropriately establishes the topic and is neither too broad nor off-topic; C) Sentence 4 logically extends the discussion by showing the practical impact of influencers on marketing strategies; and D) While sentence 5 does connect to earlier ideas, it serves as a concluding statement that explains the significance of the trend rather than merely repeating information. The revision question requires students to analyze how individual sentences contribute to overall paragraph unity—a key revision skill.