A football kicker primarily uses which muscle movement to kick the ball?

A. Abduction
B. Adduction
C. Extension
D. Circumduction

C?

To determine which muscle movement a football kicker primarily uses to kick the ball, we need to understand the specific actions involved in kicking. When a football player kicks the ball, they primarily use the extension movement to generate power and propel the ball forward with force.

Extension refers to the movement that increases the angle between two body parts. In the case of a football kicker, this refers to extending the leg from a flexed position to a straightened position during the kicking motion.

Therefore, the correct answer is C. Extension.