Specificity is
a. stretching a muscle beyond its usual maximum extension
b. each muscle must be stretched individually to improve flexibility
c. slow, controlled movements through a full range of motion, best for warm-up
d. holding stretches for 20 seconds, best for cool down
e. small but consistent increases in range of motion

The correct option is B) Each muscle must be stretched individually to improve flexibility

Explanation:

Specificity can be described as a kind of athlete training in which each muscle is focused so that there is an increase in the flexibility of every muscle. It's an excellent technique for athletes who use many muscles for their actions. Your muscles tend to develop a memory of the actions so that they perform their function even when you are not conscious. Specificity brings about the best master skills that are required in an athlete.

b is the correct answer