Final answer:
A trigger point is a point on the skin where pressure or stimulation will cause contraction of the underlying muscle.
Step-by-step explanation:
The correct option is B) Trigger point. A trigger point is a point on the skin, often located in a muscle or muscle group, where pressure or stimulation can cause contraction of the underlying muscle. These points can be sensitive or painful when pressed or when the muscle is in use. Trigger points are often treated using massage therapy techniques.