Question

Which of the following is not a type of pulley system
A fixed
B movable
C combination
D advantageous

Answer 1

I think the answer is D: advantageous

Answer 2

D advantageousA pulley is a wheel on an axle or shaft that is designed to support movement and change of ... The drive element of a pulley system can be a rope, cable, belt, or chain that runs over the pulley.