The manager could not accept the union leader's proposals.

Options

A. The union leader's proposals could not be accepted by the manager.
B. The union leader's proposals were not accepted by the manager.
C. The union leader's proposals will not be accepted by the manager.
D. The union leader's proposals would not be accepted by the manager.

Answer

A

Explanation

The union leader.s proposals could not be accepted by the manager. (Passive)
The sentence is in Simple Past Tense. (Active).
Modal (could not) has been used.