The interviewer should take down notes at the moment the person

The interviewer should take down notes at the moment the person ______ answers the questions.
A、to be interviewed
B、interviewing
C、being interviewed
D、interviewed
【正确答案】：D
【题目解析】：过去分词作定语。句中interviewed是the person的定语，answers是the person的谓语。因此答案选D。