Question

basic forehand shots are similar to a ball: the flexes at the wrist. throwing catching hitting hand

Explanation:

In sports like tennis, a basic forehand shot involves a motion where the hand (as the part of the body) flexes at the wrist. And the action of hitting a ball (in a forehand - like motion) is what the first blank is about. Throwing is more of a linear motion with the arm, catching is about receiving, and 'hand' is the body part for the second blank.

Answer:

hitting, hand