Countertransference is defined as:

• A. a process where the client copies the therapist's behavior
• B. the reaction to a client's transference, in which the counselor projects his or her feelings unconsciously onto the client.
• C. a deliberate therapeutic technique to explore emotions
• D. a legal term for client rights

Answer: (B)

Countertransference is the therapist’s emotional reaction to the client, often rooted in the therapist’s own experiences, that gets projected onto the client, usually on an unconscious level. This phenomenon matters because it can color how the therapist perceives and responds to the client, potentially hindering or helping the work depending on awareness and management through supervision and reflection. The other ideas don’t fit: copying the therapist’s behavior describes learning or modeling by the client, not the therapist’s internal reactions; a deliberate technique would imply a planned method, not an automatic emotional response; and a legal term about client rights is unrelated to the therapeutic dynamic.