6

Set 4: Words in Context (Beginner)

Explanation

Answer: B

PASSAGE

The scientist made an _____ discovery that changed our understanding of the universe.

Which choice completes the text with the most logical and precise word or phrase?

A. accidental
B. important✓ Correct
C. false
D. minor

Detailed Answer Explanation

Choice B is the best answer. "Important" is correct because it means "of great significance." The context clues in the passage indicate that this meaning best completes the sentence logically.

Why others are wrong: A ("Accidental" means "happening by chance," which doesn't fit the context.), C ("False" means "not true," which doesn't fit the context.), D ("Minor" means "small in importance," which doesn't fit the context.).