The sentence below from the section "Contact Vs. Non-contact Force" helps prove the claim that some forces have physical contact with the object they are affecting. Contact forces, as the name implies, take place when objects touch each other, such as kicking a ball: One object (your foot) touches the other object (the ball).

Which sentence from the section provides further support for the claim?
(A) introduction

(B) units of force

(C) contact vs. non-contact force

(D) force and newton laws of motion