What makes the girl capable of kicking the soccer ball?
a
The bones in her leg contract and relax causing the muscles in her leg to kick the ball.
b
The bones in her leg send a message to the muscles causing them to move and kick the ball.
c
The muscles in her leg contract and relax causing her leg to move and kick the ball.
d
The muscles in her upper body and hands send a message to the leg muscles and make them move.