Set 3: Transitions (Intermediate)
Explanation
PASSAGE
CRISPR gene-editing technology has revolutionized biological research by allowing precise modifications to DNA. Scientists can now target specific genes with unprecedented accuracy. _______ ethical concerns about human germline editing remain largely unresolved.
Which choice completes the text with the most logical transition?
Detailed Answer Explanation
This question asks you to choose the transition that best connects two ideas. Scientific capability (positive) vs. ethical concerns (unresolved). 'Nevertheless' signals that despite the progress, problems persist. Transitions signal the relationship between sentences or paragraphs. Determine the logical relationship (addition, contrast, cause-effect, example) and select the transition that accurately expresses it. The right transition makes the relationship between ideas crystal clear. Consider what logical connection exists: Is the second idea adding to the first? Contrasting it? Showing a result? The transition should accurately reflect this relationship.
Key Evidence:
• "revolutionized biological research"
• "ethical concerns... remain largely unresolved"
Why others are wrong: A (Cause/effect - ethical concerns aren't a result of the technology's success.), B (Specific detail - ethical concerns are a different point, not a specification.), D (Comparison - the concerns contrast with, not resemble, the progress.).