Set 2: Inferences (Intermediate)

Explanation

Answer: A

PASSAGE

CRISPR gene-editing technology allows scientists to modify DNA with unprecedented precision. However, recent studies have revealed 'off-target effects'—unintended genetic changes in locations other than the targeted site. These findings have intensified debates about whether the technology is ready for human clinical applications.

What does the passage suggest about CRISPR technology?

A. Its clinical application remains controversial due to unresolved safety concerns.✓ Correct

B. Off-target effects are considered beneficial.

C. Scientists have stopped researching gene editing.

D. It has been proven completely safe for human use.

Detailed Explanation

This question asks you to draw a logical conclusion from the text. 'Off-target effects' have 'intensified debates' about clinical readiness—unresolved safety = controversy. A valid inference must be supported by evidence in the passage, even if not stated directly. Look for clues in the text that strongly suggest the answer. Avoid conclusions that require assumptions beyond what's written. Valid inferences are strongly supported by multiple pieces of evidence in the text. Be cautious of choices that go too far beyond what the passage actually states. The best inference is the one most directly supported by textual evidence.

Key Evidence:

• "unintended genetic changes"

• "intensified debates about whether ready for human clinical applications"

Why others are wrong: B ('Off-target' = unintended = not beneficial.), C ('Recent studies' show ongoing research.), D ('Intensified debates' means safety isn't proven.).

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