2

Set 2: Inferences (Intermediate)

Explanation

Answer: B

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. It has been proven completely safe for human use.
B. Its clinical application remains controversial due to unresolved safety concerns.✓ Correct
C. Scientists have stopped researching gene editing.
D. Off-target effects are considered beneficial.

Detailed Explanation

'Off-target effects' have 'intensified debates' about clinical readiness—unresolved safety = controversy.

Key Evidence:

• "unintended genetic changes"

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

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

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