An Instructor Has a Learner in the Class That Is

An instructor has a learner in the class that is struggling with the subject matter being presented. The instructor notices the learner making facial expressions. Which of the following will MOST likely help the learner with the material?

A) Go to the learner privately and ask if there are any questions to clarify the material.
B) Ask the learner in front of the class why they do not understanding the material.
C) Make note of the learner's facial expressions, continuing on with discussing the topic to see if they later understand the subject.
D) Ask the learner to come forward and demonstrate the information that was just presented.