The logical answer is to seek out additional opinions from other group by doing that it can give more ideas, then everyone should decide on which idea to vote on, if that idea fails to be picked by the majority then ask the students who disagree explaint thier view point. The point here is that all students must feel like they have contributed something to the group so they don't feel guilty.
C, ask the student for their point of you, as they may see the theme differently, but you can try to figure out if this theme also makes sense (or more sense).
