What is the function of the antilock braking system (ABS)?

Answer: B — To prevent wheel lock-up during braking

The antilock braking system (ABS) is designed primarily to prevent wheel lock-up during braking, especially in emergency situations. When a driver applies the brakes hard, the system automatically modulates brake pressure to each wheel, preventing the wheels from locking and allowing the driver to maintain steering control. This is crucial during sudden stops or when braking on slippery surfaces, as locked wheels can lead to a loss of traction and control of the vehicle. By preventing wheel lock-up, ABS enhances vehicle safety and helps the driver stop effectively while still being able to steer, greatly reducing the risk of skidding or losing control. This core function is why B is the correct answer regarding the role of the antilock braking system.