Final answer:
The therapist is using Freud's theory of dream analysis to explain Clay's dream.
Step-by-step explanation:
The therapist is using Freud's theory of dream analysis to explain Clay's dream. According to Freud, dreams have a manifest content, which is the actual storyline of the dream, and a latent content, which represents the hidden meaning of the dream. In this case, the therapist interprets Clay's flying in the dream as a representation of freedom and independence from his parents, while the unknown destination symbolizes a sense of fear and doubt from no longer having parents as guides.