Gerry Has Reluctantly Started Therapy to Try to Find Help

Gerry has reluctantly started therapy to try to find help for his post-traumatic stress disorder (PTSD) , on the advice of a close friend. However, he doesn't have any confidence it will be effective and tends to avoid talking about the things that he finds truly upsetting during his sessions to avoid the pain that could cause. What factor could be reducing the chances that his therapy will have a successful outcome?

A) Gerry's lack of openness
B) the fact that Gerry's friend had encouraged him to start therapy
C) the lack of control Gerry has over the session
D) the lack of control the therapist has over the session
E) none of these factors would reduce Gerry's chances of a successful therapeutic outcome