During Tuckman's performing stage of group development, members focus their energies on both the task and social dimensions of group work as they make major decisions and solve critical problems.

a. True

b. False

The correct answer is - A. True.

Explanation:

Bruce Tuckman a psychologist that said in 1965, that each team goes through 5 different stages of development that are namely forming, storming, norming, performing and in the last adjourning.

Performing stage is the fourth stage and the second last stage where members know what is the project and they are motivated and confident and they can do it on their own without any supervision to solve the critical problems.

Thus, the correct answer is - a. True.