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Validity of an experiment is based upon:

A. Using a control group.
B. Performing a fair test in which only the independent variable affects the dependent variable.
OC. Using multiple independent variables.
D. Performing a fair test, in which only the dependent variable affects the independent variable.


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User Omkar Puttagunta
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Answer:

performing a fair test, in which only the dependent variable affects the independent variable

User Falyne
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