The correct answer is the control variable. For example, if you want to measure how men and women like cats, you would present the same cats to all the people (that;s the constant variables) and gender is your control variable.
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Answer: [B]: "proteins" .
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Answer:the company will perform the same investigation and compare the results to the manufacturers
Explanation:
Just did the quiz
The answer is Humans. Humans have a forelimb most similar to a dolphins.