During a Socratic Circle - A: participants should question the motives of others.
B: participants should allow the most outspoken people in the group to debate.
C: participants should modify their thinking when necessary.
D: Participants should try to get others to agree with them.

C: participants should modify their thinking when necessary.

Explanation:

The "Socrates Method" is a strategy of teaching which allows the participants to use their minds even when they haven't read about the topic in the discussion.

This is not considered as a debate, thus it makes choice B incorrect. It also doesn't include the need to persuade other people to agree with what you're saying, thus this makes choice C incorrect. Rather, participants have to be open-minded by not questioning the motives of others.

The Socrates Method is concerned about the participants way of thinking, thus they are given an ample time to think and they can also modify it when necessary. The teacher should also be prepared with many questions in order to drive the conversation among the students.