A "logically perfect" group decision making method because all team members agree totally on a course of action is known as:

A) consensus.
B) unanimity.
C) majority rule.
D) minority rule.
E) lack of response.

Unanimity is the only option that states all team members agree totally on a course of action, making it the "logically perfect" group decision making method. Consensus only requires that everyone supports the final decision, but not necessarily that they all fully agree with it. Majority and minority rule both imply that not everyone agrees with the decision, and lack of response is not a decision making method at all.