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O eliminate the possibility of hidden or unknown variables, the scientist must run a _______ experiment. A) control B) preliminary C) test D) variable
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O eliminate the possibility of hidden or unknown variables, the scientist must run a _______ experiment.

A) control
B) preliminary
C) test
D) variable

User Pobrelkey
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Answer:

To eliminate the possibility of hidden or unknown variables, the scientist must run a Controlled experiment.

User Zvi
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