Set 16: Boundaries

Explanation

Answer: B

PASSAGE

The artifact, which was carefully restored, _______ recently.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. been discovered

B. was discovered✓ Correct

C. were discovered

D. discovering

Detailed Answer Explanation

The correct answer is 'was discovered' because of the rule: passive voice agreement.

Why others are wrong: A ('been discovered' violates the grammatical rule: passive voice agreement.), C ('were discovered' violates the grammatical rule: passive voice agreement.), D ('discovering' violates the grammatical rule: passive voice agreement.).

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