Final answer:
An individual with a below-elbow amputation lacking sensation in the residual limb should focus on enhancing tactile perception. This will improve their ability to sense and interact with their environment and use prosthetic devices effectively.
Step-by-step explanation:
An individual with a below-elbow amputation lacking sensation in the residual limb should be taught by the occupational therapist (OT) to focus on enhancing tactile perception. Tactile perception involves the ability to perceive touch and sensation through the skin. By enhancing tactile perception, the individual can improve their ability to sense and interact with their environment, which is important for performing daily activities and using prosthetic devices effectively.