A "fair test" in a scientific experiment refers to A) Testing one variable at a time while keeping all others constant. This approach ensures that any observed changes in the outcome can be attributed directly to the variable being tested, allowing for reliable and valid conclusions to be drawn from the experiment.
In a scientific experiment, what is meant by a "fair test"?
A) Testing one variable at a time while keeping all others constant
B) Allowing participants to change variables
C) Testing as many variables as possible simultaneously
D) Using only qualitative data
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