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29 June, 17:53

During a controlled experiment, a scientist isolates and tests

A. a conclusion.

B. a mass of information.

C. a control group.

D. a single variable

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Answers (2)
  1. 29 June, 18:25
    0
    As we know that a single variable as controls are always used to test the effect of one variable on a particular experiment

    So the best answer is D
  2. 29 June, 19:39
    0
    During a controlled experiment, a scientist isolates and tests D. a single variable.
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