Which of the Following Is True About Control Variables

question 340

Multiple Choice

Which of the following is true about control variables?

• A)Control variables are used to minimize the relative error of measurements.
• B)The control variable is the only variable measured in an experiment.
• C)Control variables are kept constant to help understand the relationship of other variables.
• D)The control variable is the only piece of data that is important during an experiment.

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