In an experiment or investigation, what is a control?(1 point)
Responses
The variable that changes other variables in the experiment.
The variable that changes other variables in the experiment.
The variable that the experimenter controls or changes in the investigation.
The variable that the experimenter controls or changes in the investigation.
The variable that remains unchanged throughout the investigation.
The variable that remains unchanged throughout the investigation.
The purpose or reason for the experiment or investigation.