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When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the _______ variable.

Aenvironmental
Bobservational
Cexperimental
Dcontrol

Verified Answer :

lrathburn

When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the C. experimental. Experimental variables are the things you are studying in the experiment and it is the only variable you can change.

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