A simple machine allows a person to do the same amount of work with less effort, but it takes more time. Which of the following is an example of a simple machine?

A wheelchair ramp is an example of a simple machine. Specifically, it falls under the category of an inclined plane. An inclined plane is a flat surface that is tilted, allowing objects to be moved up or down with less force than lifting vertically. In the case of a wheelchair ramp, it makes it easier for a person using a wheelchair to move between different elevations.