A client who is seeking an equally committed workout partner is in which of the...

In the Stages of Change Model, the preparation stage is when a client intends to start exercising soon (within the next 30 days) and may already be taking small steps toward change, such as seeking a workout partner.

In contrast:

Contemplation = thinking about change but not ready to start soon.

Action = actively engaging in new behavior.

Maintenance = sustaining the behavior for 6+ months.

Therefore, actively looking for a committed workout partner indicates preparation.