The variable that depends upon what is done to it by the independent variable is the

The variable whose value depends on what the independent variable does to it is the dependent variable.

It registers the effect of the manipulation as an observed outcome.

An extraneous variable is an outside influence, not the outcome that depends on the treatment.

A manipulated variable is the independent variable itself, the cause rather than the effect.

A control variable is held constant and does not depend on the independent variable.

The dependent variable is what the researcher measures to judge the treatment's impact.