In the context of consolidating gains and planning maintenance strategies, the decision to use rituals to mark termination should be based on the:​

A) ​social worker's understanding of the client.
B) ​length of the initial contract period.
C) ​closure protocol followed by the social worker.
D) ​social worker's satisfaction with the client's progress.

The decision to use rituals to mark termination should be based on the social worker's understanding of the client. This includes an understanding of the client's cultural background and personal preferences. Different clients may have different needs and responses to termination rituals, so it is important for social workers to tailor their approach accordingly. The length of the initial contract period, closure protocol, and social worker's satisfaction with the client's progress may be relevant factors to consider, but they should not be the sole basis for the decision to use termination rituals.