Suppose That a Psychology Professor Begins a Lecture by Saying,"OK,do

Multiple Choice

Suppose that a psychology professor begins a lecture by saying,"OK,do you all remember the concept of 'ecological validity'?" The students all nod their heads.During this interaction,the professor was primarily interested in

A) solving the linearization problem.
B) avoiding a syntactic error.
C) formulating an indirect request.
D) establishing common ground.