The stockbroker said it was an astute move to sell the shares then?

Analyze the question: The underlined word is "astute" in the sentence: "The stockbroker said it was an astute move to sell the shares then." We need the option closest in meaning to "astute."

Explain the concept: "Astute" is an adjective meaning clever, sharp, and quick to see what is advantageous. It describes someone with good judgment, especially in business or practical matters. Synonyms include shrewd, smart, sharp, canny, perceptive.

Solution (step by step):

1. Read the context. A stockbroker is praising a decision to sell shares. Since he is commending it, the word must be positive.
2. Test each option: • A. a bad: This is negative, the opposite of praise. ✗ • B. a shrewd: This means clever and showing good judgment. It fits perfectly. ✓ • C. an unprofitable: This means not making money. A stockbroker would not praise a move as unprofitable. ✗ • D. an insincere: This means not genuine, which has nothing to do with "astute." ✗
3. Substitute "shrewd" into the sentence: "The stockbroker said it was a shrewd move to sell the shares then." The sentence makes sense and keeps the original meaning.

Correct answer: B (a shrewd)

Exam tip: In vocabulary questions, first decide whether the word is positive or negative from the context. Here, a stockbroker praising a move tells you the word is positive, which immediately eliminates A and C. Also remember the trio astute = shrewd = clever for your lexis and structure paper.