Which of the following statements is true of group dynamics?

A) It is related to a variety of mental health issues, including alcoholism, anxiety, and depression.
B) It excludes the areas related to conflict management.
C) It gives an individual the power to enforce group members to do as instructed.
D) It serves as the cornerstone in the study of human relations.

Group dynamics is the study of how groups interact and relates to the social psychology and organizational behavior fields. It serves as the cornerstone in understanding how people behave in groups and how to manage group dynamics effectively. Option A is incorrect because while group dynamics may affect mental health, it is not exclusively related to mental health issues. Option B is incorrect because conflict management is a crucial aspect of group dynamics. Option C is incorrect because group dynamics emphasizes the importance of collaboration and understanding, rather than one group member's ability to enforce instructions.