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21 February, 01:54

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. 21 February, 02:36
    0
    During a controlled experiment, a scientist isolates and tests D. a single variable.
  2. 21 February, 03:33
    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
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