How Will a Therapist Know When Their Client Has Achieved

How will a therapist know when their client has achieved personal growth and successfully navigated developmental tasks, a process also referred to as self-actualization?

A) Self-actualization is a lifelong process; therefore, only the client will know when they have achieved self-actualization
B) The therapist will know that their client has achieved self-actualization when the client is no longer attending sessions regularly
C) The therapist will know that their client is making progress towards self-actualization when the client is no longer experiencing symptoms at the individual level and they are able to function in most areas of daily life
D) There is no clear definition of self-actualization; therefore, one can never fully achieve it