Final answer:
Technician A is correct, as a rear toe adjustment can affect the thrust angle. Rear camber does not directly affect the rear toe angle.
Step-by-step explanation:
Technician A is correct. Rear toe adjustment can indeed affect the thrust angle of a vehicle. The thrust angle is the angle between the vehicle's centerline and the direction in which the rear wheels are pointing. Adjusting the toe angle of the rear wheels can cause a change in the thrust angle, which is important for maintaining stability and preventing the vehicle from pulling to one side.
Technician B is incorrect. Rear camber refers to the inward or outward tilt of the top of the rear wheels. It does not directly affect the rear toe angle. However, if the rear camber is significantly misaligned, it can lead to uneven tire wear, which may indirectly affect the rear toe angle over time.