Q: The values of which factors are controlled by the experimenter over the course of an experiment?


Read this paragraph and choose the correct option from the provided answers:

A variable is a factor that can change over the course of an experiment. Independent variables are factors whose values are controlled by the experimenter to determine its relationship to an observed phenomenon (the dependent variable). Dependent variables change in response to the independent variable.

 Choices:

- other variables

- independent elements

- independent approaches

- independent variables


A:
independent variables