Camber is the: a. Axis between the upper and lower pivots on the control arm. b. Side-to-side vertical tilt of the wheel. c. Axis around which the wheel assembly swivels as it turns. d. Angle the steering arms make with the steering axis projected toward the center of the rear axle.

The correct answer is a. Camber is the axis between the upper and lower pivots on the control arm. It refers to the angle of the wheels relative to the vertical axis when viewed from the front or rear of the vehicle. Positive camber means the top of the wheel is leaning outwards, while negative camber means the top of the wheel is leaning inwards. Camber is important for maintaining proper tire contact with the road and ensuring stability and handling of the vehicle.