Final answer:
According to Newton's third law of motion, when a person pulls on a truck with a rope and the truck doesn't move, the force exerted by the person on the truck is equal to the force the truck exerts on the person.
Step-by-step explanation:
The question posed relates to Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. This means that when a person is pulling on a rope that is attached to a truck and the truck does not move, the force exerted on the truck by the person is equal to the force exerted on the person by the truck, adhering to Newton's third law. This law applies regardless of whether objects are in motion or at rest. Therefore, the force on the truck is equal to the force on the person (Option A). This is also evidenced by tension in the rope, which is equal throughout and illustrates the forces acting on both ends of the rope.