One of the problems teachers face in class is nonparticipant students. In a class where several students refuse to take part in the assigned activities, the teacher might:

I. use eye contact and continue speaking.

II. interrupt with “Thanks for that” and continue speaking.

III. ignore them if they are not disturbing others.

IV. stop mid-sentence and stare until the students stop.

V. ask colleagues how the same students participate in their classes.

Which of the actions above are correct?