Question

To eliminate the possibility of hidden or unknown variables, the scientist must run a _______ experiment.

Answer 1

To eliminate the possibility of hidden or unknown variables, the scientist must run a Controlled experiment.

Answer 2

Control experiment

Step-by-step explanation:

to eliminate the possibility of hidden or unknown variables, the scientist must run an a Control experiment

A control Experiment is performed to minimize the effect of variables other than the independent variable.

Reliability of the results are increased after the control experiment.