Research concerning the relationship between group cohesiveness and performance suggests that the answer is B) groups that perform as a whole develop stronger cohesiveness.
Research shows that group cohesiveness is a crucial factor in performance, as it is not solely dependent on the presence of a strong leader. High cohesive groups generally perform better than less cohesive groups due to better communication, cooperation, and coordination. The relationship between group cohesiveness and performance is not influenced by gender composition, and the presence of a strong leader is not a significant factor. Overall, effective group performance leads to stronger cohesiveness, which is not solely dependent on a strong leader.