Answer:
The answer is: Activation-synthesis theory of dreaming
Step-by-step explanation:
According to the activation-synthesis theory, the dreams are a result of the physiological processes of the brain during the REM sleep ( Rapid eye movement sleep).
According to this theory, brain activation is observed during the rapid eye movement sleep which includes the neuronal activity occurring in the brainstem. This neuronal internal activity is synthesized and interpreted by the brain in order to create meaning thus resulting in dreaming.
Therefore, Betty most likely believes in the activation-synthesis theory of dreaming.