6
Answer: ASet 5: Words in Context (Intermediate)
Explanation
PASSAGE
The genetic mutation proved to be _____ linked to the disease.
Which choice completes the text with the most logical and precise word or phrase?
A. directly✓ Correct
B. loosely
C. accidentally
D. never
Detailed Answer Explanation
Choice A is the best answer. "Directly" is correct because it means "in a direct manner; without intermediary." The context clues in the passage indicate that this meaning best completes the sentence logically.
Why others are wrong: B ("Loosely" means "not firmly," which doesn't fit the context.), C ("Accidentally" means "by chance," which doesn't fit the context.), D ("Never" means "at no time," which doesn't fit the context.).