Research suggests that the cohesion-performance relationship is:

A) unidirectional: increases in cohesion cause improvements in performance.
B) unidirectional: improvements in performance cause increases in cohesion.
C) bidirection: increases in cohesion cause increases in performance,and improved performance increases cohesion
D) unstable: the performance of a group cannot be predicted from its level of cohesion.

Research shows that the cohesion-performance relationship is bidirectional, meaning that increases in cohesion cause increases in performance, and improved performance increases cohesion. There is evidence to support that cohesion can lead to better communication, cooperation, and trust among group members, which can result in improved performance. At the same time, experiencing success and achieving goals can also increase group cohesion. Therefore, it is a mutually reinforcing relationship.