[Solved] Which of the following would be considered a delusion? A)clearly seeing a vision of an object that is not physically present B)having to wash one's hands thoroughly every time one touches something C)feeling pain in one's back even though there is no physical sign of injury D)being convinced that one's neighbours are aliens from another planet Visual Signs: Observable indicators or symptoms that can be seen visually, often critical for diagnosis in medical and other fields. Voyeuristic: Relating to or characterized by an interest in observing unsuspecting individuals, typically for sexual gratification. Activities: Tasks or actions that individuals engage in, often for leisure or to accomplish a specific goal. Autoerotic Asphyxia: involves intentionally restricting one's own breathing during masturbation to enhance sexual arousal and orgasm.