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Solnce55 [7]
3 years ago
8

To eliminate the possibility of hidden or unknown variables, the scientist must run a _______ experiment. A) control B) prelimin

ary C) test D) variable
Biology
2 answers:
Leokris [45]3 years ago
8 0
To eliminate the possibility of hidden or unknown variables, the scientist must run an A) Control experiment
tino4ka555 [31]3 years ago
7 0
Preliminary experiment. this would rule out any unknown variables. yes the experiment would have to be controlled but it would have to be preliminary because it has to be done to ensure there are no unknown variables
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