Which of the Following Is a Reason That None of the Learners

Multiple Choice

Which of the following is a reason that none of the learners respond to a trainer's closed-ended question?

A) Learners may not know the answer to the specific question.
B) The question was not directed to a specific student to answer.
C) The trainer is pausing too long for a response.
D) Closed-end questions do not require answers.