Question

when should you use \braking\ to stop the lift truck?
when you want to stop the lift truck in an emergency.
when you have a load elevated.
when you want to stop smoothly and gradually.
when you leave the lift truck parked on a ramp or incline.

Explanation:

Braking is used to stop the lift truck smoothly and gradually. In an emergency, other safety procedures might be more appropriate. When having a load elevated, sudden braking can cause instability. When leaving the lift truck parked on a ramp or incline, parking brakes or chocking are used rather than regular braking for stopping.

Answer:

When you want to stop smoothly and gradually.