A car is moving at a constant speed along a straight line. which statement is true about the forces acting on the car?

Then force will zero because of constant velocity the acceleration is zero

Moving at constant speed means you are not speeding up (accelerating). If you think about what a force is, according to Newton's Laws, you should be able to come a reasonable conclusion about the forces acting on the car. Newtons second law of motion is F=ma Given a=0 So summation of F=0