When a Group Member Withdraws from the Group and Remains

When a group member withdraws from the group and remains passive, the group leader must:

A) respect the privacy of the member, without asking any questions.
B) intervene in an attempt to involve the member, without violating their right to privacy.
C) insist that the group member participate, to preserve the equal standing of all group members.
D) avoid the individual group member in future interactions, until they volunteer to speak up.