Explanation:
Part A,
If a car is moving to the left with constant velocity, the change in velocity of the car is equal to zero. So the acceleration of the car is zero. As a result, the the net force applied to the car is zero.
So, the correct option is (c) "the net force applied to the car is zero".
Part B,
An object cannot remain at rest unless the net force acting on it is zero. This is Newton's first law of motion.
So, the correct option is (b).
Part C,
An object will have constant acceleration, the net force acting on it is constant in magnitude and direction. The net force acting on the object is directly proportional to its acceleration.
So, the correct option is (c).
Hence, this is the required solution.