[Nevadaref]

Originally Posted by ilyazhito

a,b,and c are all intentional, because the defender is jumping into the path of the ball. Jumping towards the ball means that the defender intends to play the ball, and since playing the ball with the leg or foot is illegal, therefore the defender contacting the ball in this situation is intentionally striking the ball with the leg or foot and by definition illegal. If the ball is heading towards the defender, likely nothing, but if the defender is heading towards the ball, especially on a throw-in, and contacts it with the lower body, I have a kicking violation.

To be clear to the OP, what is quoted above is not the NFHS interpretation of the rule. It is a personal opinion expressed by a single official and many of us on this forum would not agree with him.