Which of the following is an example of an incline plane? a) lever b) gear c) pulley d) screw

Some examples of inclined planes include wheelchair ramps, airplane evaluation slides and various loading ramps used on trucks. An inclined plane refers to any structure that is oriented on an angle, which resembles a triangle when viewed from the side.

I think the answer is C

Gear because each spike is a wedge shape that adds a mechanical advatage