Which of the following BEST describes the advantages of open-ended questions?

Which of the following BEST describes the advantages of open-ended questions?

A.
It creates opportunities for learners to contribute to the discussion and apply course content.

B.
It keeps all of the learners engaged and prepared to answer a question.

C.
It is less likely that the learners will answer them incorrectly.

D.
It enables a less knowledgeable instructor to question a class.