Answer:
D. Restate the main topic and try to find common ground.
Step-by-step explanation:
This is probably the best strategy for the students to get the discussion back on track. The students seem to be confused as to the motives of the main character. They disagree, and they are struggling to move on. One of the strategies that could be useful to them would be to restate the main topic, and try to find common ground in this subject. This will refocus their attention to something that is less controversial.