Answer:
The correct option is D:
"The smallest distance between two points that can be differentiated by the somatic sensory system"
Step-by-step explanation:
The two-point discrimination is defined as the ability to tell the difference between two closely placed distinct points that are touching the skin. Usually very sharp points are used to test this during a neurological exam. It is done to check how many nerves are concentrated in that particular area of skin. The minimum distance at which you can recognize two points as two and not one differs for different parts of the body. For example, the finger tips are more sensitive in this regard than the palm of the hand.
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