Final answer:
The hidden meaning in dreams corresponds to Freud's psychoanalytic theory, not the Activation-Synthesis model, which suggests that dreams stem from the brain's interpretation of neural activity.
Step-by-step explanation:
The theory that suggests the hidden meaning behind a dream reflects the content of the dreamer's unconscious mind is most closely associated with psychoanalytic theory, particularly the work of Freud and to some extent, Carl Jung. However, this concept is not covered by any of the options provided in the question (A) Adaptive theory, (B) Restorative theory, (C) Information processing theory, or (D) Activation-synthesis model. Instead, the Activation-Synthesis model, developed by Alan Hobson, proposes that dreams result from the brain's attempt to make sense of random neural activity during REM sleep, not necessarily reflecting hidden unconscious content as Freud's psychoanalytic theory would suggest.