Answer:
(a) The force exerted by the car is greater.
Step-by-step explanation:
This can be explained by Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. When the mosquito collides head-on with the car, the car exerts a force on the mosquito, but the mosquito also exerts an equal and opposite force on the car. Given that the car is much larger and more massive than the mosquito, the force it exerts on the mosquito will be greater than the force the mosquito exerts on the car.