Which of the following statements is true?

A) To be effective,change-promoting groups must promote catharsis among members.
B) People experiencing a problem who engage in upward social comparison describe their own adjustment in more positive terms.
C) In support groups,the group leader is the individual who is most responsible for maintaining positive change.
D) Support groups expose members to others who provide them with reassurance and hope.

Support groups are designed to provide members with a sense of social support and connectedness. Members can receive reassurance and hope from others in the group who have experienced similar challenges. This social support can help members to cope with their problems and promote more positive adjustment. Option A is incorrect because the promotion of catharsis is not always necessary for change-promoting groups to be effective. Option B is incorrect because upward social comparison can lead to negative affective states, such as envy or low self-esteem. Option C is incorrect because while group leaders can play an important role in facilitating positive change, members themselves are also responsible for maintaining progress.