Answer:
C) A standing ovation was received by the singer.
Step-by-step explanation:
A sentence is written in active voice when the subject of the sentence performs the action in the sentence. And a sentence is written in passive voice when the subject of the sentence has an action done to it by someone or something else.
The above sentence is written in passive voice. The active voice of this sentence can be written as:
The singer received a standing ovation.