Mr Germane Is Delivering a Science Lecture as the Phone

Mr. Germane is delivering a science lecture as the phone in the classroom rings. He quickly asks the class a question and directs them to write their answer on a sheet of paper. He answers the phone on the fourth ring, takes care of the needs of the caller, and then turns his attention back to the class. Kounin would say that this is an example of

A) an authoritative teaching style.
B) withitness.
C) overlapping.
D) the ripple effect.