Question

question 1 variables in an experiment that are changed and controlled by the experimenter are called ______. dependent variables confounding variables independent variables extraneous variables

Explanation:

To solve this, we analyze each option:

• Dependent variables depend on independent variables and are measured, not controlled by the experimenter.
• Confounding variables interfere with the relationship between independent and dependent variables, not controlled by the experimenter.
• Independent variables are deliberately changed or controlled by the experimenter to observe their effect on dependent variables.
• Extraneous variables are unwanted variables that can affect the experiment but are not controlled by the experimenter.

So the correct option is the one where the variable is changed and controlled by the experimenter, which is independent variables.

Answer:

C. independent variables