Assertion (A) is true: In an emergency, applying brakes in a straight line is generally a safer and more controlled maneuver to reduce speed and avoid collision, as sudden turns at high speed can lead to loss of control or skidding.

Reason (R) is true: Both stopping the car (through braking) and taking a turn (requiring centripetal force) on a horizontal road fundamentally rely on the friction force between the tires and the road. Reason (R) is true, but it does not explain *why* braking is preferred over turning; it merely states that friction is involved in both actions.

Therefore, (A) and (R) are true, but (R) is not the correct explanation of (A).