What Is the Effect of Joint Actions in the Propulsive

Multiple Choice

What is the effect of joint actions in the propulsive phase of the long jump?
1) action at the ankle moves lower leg backward for balance
2) action at metatarsal-phalangeal joints lifts body upward
3) hip action helps keep trunk in alignment
4) knee action causes thigh to move forward and upward

A) 1, 4
B) 1, 2, 3
C) 2, 3, 4
D) 1, 2, 3, 4