Question

1. as it is used in paragraph 2, clue most closely means

a. an answer that is clearly correct.
b. a sign that helps solve a puzzle.
c. a key that helps open a lock.
d. a promise to help others.

Explanation:

The common - usage definition of "clue" is something that helps solve a problem or a puzzle. Option B best captures this meaning.

Answer:

B. a sign that helps solve a puzzle.