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A(n) __________ refers to a substance or treatment that is often used in an experiment but does not have an actual medicinal or experimental benefit. A. Extraneous variable B. Placebo C. Confounding variable D. Independent control Please select the best answer from the choices provided A B C D.

Respuesta :

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Answer:

A placebo refers to a substance or treatment that is often used in an experiment but does not have an actual medicinal or experimental benefit.

Explanation:

Answer:

A __placebo (B)___ refers to a substance or treatment that is often used in an experiment but does not have an actual medicinal or experimental benefit.

Explanation:

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