Answer the following question given this paragraph: 

A: Variables might include factors relating to the ramp or to the object. An example of a variable relating to the ramp is its steepness. An example of a variable relating to the object is the way it moves—it might roll or slide down the ramp. Either of these variables could be manipulated by the researcher, so you could choose one of them for your manipulated variable.


Q: An example of a variable relating to the ramp is its what?

 Choices:

- color

- mass

- weight

- steepness

A:
steepness
