Question

In an experiment, the weight that mice gain is the dependent variable and the temperature of the environment is the independent variable. What must be held constant to obtain valid experimental results?

Answer 1

There are many constant or controlled variables. One of them might be that the mice have to be in the same environment. It's stuff like that.

Answer 2

The correct answer is C:

"the type of food given to the mice"

Have a good day! :)