Question

what type of machine is a ramp for wheelchairs?
compound machine
simple machine
complex machine
mechanical machine

Explanation:

A wheelchair ramp is a flat surface that is tilted at an angle to help lift objects. This is the definition of an inclined plane, which is a type of simple machine. A compound machine is made up of two or more simple machines. A complex machine is not a standard term in basic machine classification. A mechanical machine is a very broad term. Since a ramp is an inclined plane (a simple machine), the answer is simple machine.

Answer:

simple machine