[Solved] Define and describe at least three major types of electronic pornography. Mental Activity: Processes of the mind that include thinking, perceiving, remembering, reasoning, and any other form of cerebral operation. Physical Activity: Any movement of the body that requires energy expenditure, contributing to improving or maintaining physical fitness. Depressant: Depressant describes substances that reduce arousal and stimulation in the body, often prescribed to relieve anxiety, tension, and sleep disorders. Mental Activity: Any cognitive operation or process by which an individual becomes aware of or perceives ideas, thoughts, and feelings.