In the first session of a treatment group, a social worker invites its members to discuss their reasons for joining the group. The invitation by the social worker is most likely intended to:​

A) ​assess the motivation levels of group members.
B) ​facilitate cohesion among group members.
C) ​clarify the group's purpose.
D) ​determine group composition.

The social worker's invitation to discuss their reasons for joining the group is most likely intended to clarify the group's purpose. By understanding why each member has joined, the social worker can ensure that the group is meeting their needs and that members have a shared understanding of the group's goals. This can improve group cohesion and help with group composition, but those are not the primary reasons for the invitation. Assessing motivation levels is also not the primary goal of this invitation.