Question

scientific method, conversions, classification test retake
in an experiment, the one variable that is changed is called the variable. controlled experimental dependent independent

Explanation:

In a scientific experiment, the independent variable is the one that is deliberately changed by the researcher. Controlled variables are kept constant, the dependent variable is what is measured and changes in response to the independent variable, and experimental is not the specific term for the variable that is changed.

Answer:

D. independent