What is the primary function of the Anti-lock Braking System (ABS) during emergency panic braking?

1. It prevents the wheels from locking up, allowing the driver to maintain directional steering control while braking with maximum force
2. It halves the stopping distance on all wet and muddy surfaces automatically
3. It eliminates the need for the driver to press the brake pedal
4. It automatically turns the steering wheel away from obstacles without driver input