Concept:Newton's third law of motion explains the action–reaction force pair between two bodies.
Explanation:When a gun fires a bullet, the gun exerts a forward force on the bullet.
This is the action force.
Simultaneously, the bullet exerts an equal and opposite force on the gun.
This backward force on the gun is the reaction force.
Because action and reaction are equal in magnitude and opposite in direction, the hunter feels the gun recoil backward.
This directly demonstrates Newton's third law of motion.
Answer:C. Third law