The __________ is used for an event that has been completed before the present moment in time.

Asimple past
Bpast perfect
Cperfect progressive
Dpast perfect progressive

Verified Answer :

Simple past. The simple past refers to ab event that has already been completed and is no longer continuing. For example. I buy some food. vs I bought food already. The food has already been bought and the action has ceased.

The simple past is what is used in English for an event that has been completed before the present moment in time.