Final answer:
The therapist's interpretation of Tony's dream about the costume and mask would be considered the latent content, which refers to the hidden psychological meaning of the dream. The correct option is A.
Step-by-step explanation:
The therapist's interpretation of Tony's dream involving a costume and mask suggests that Tony is hiding his true self. This interpretation would be considered the latent content of the dream. While manifest content is the actual content or storyline of the dream, latent content refers to the hidden psychological meaning of the dream.
The use of a mask and costume in Tony’s dream can be understood as symbols or metaphors for concealing one’s true identity, which aligns with the concept of latent content.