Outline Prochaska's six-stage model of behavior change.
a) Precontemplation, Contemplation, Preparation, Action, Maintenance, Termination
b) Contemplation, Preparation, Action, Maintenance, Termination, Reflection
c) Precontemplation, Action, Preparation, Maintenance, Contemplation, Termination
d) Action, Maintenance, Preparation, Contemplation, Termination, Precontemplation