According to Your Text, in Which Group Is a Consensus

According to your text, in which group is a consensus by the members likely to be the most persuasive to others?

A) In a group of individuals from the same team.
B) In a committee whose members each represent different neighborhoods in a large city.
C) In a group comprised primarily of out-group members.
D) In a group comprised primarily of in-group members who are so similar that they are difficult to tell apart.