Question

what is the independent variable in an experiment? the variable that is manipulated by the researcher a variable that is kept constant the variable that is measured in response a variable that cannot be controlled

Explanation:

In an experiment, the independent variable is the one that the researcher deliberately changes or manipulates to observe its effect on the dependent variable. It is not the variable kept constant (control variable), the measured response (dependent variable), or an uncontrolled variable.

Answer:

The variable that is manipulated by the researcher