Researchers are conducting a study to determine the effects of the mineral zinc on the human body.The study involves providing pills that contain zinc to one group of human subjects and pills that do not contain zinc or other active ingredients to another group of people.The pills that do not contain zinc are

Question

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The pills that do not contain zinc are placebos. Placebos do not contain any active ingredients and are used as a control group in studies to determine the true effects of the test substance (in this case, zinc). Probiotics and supplements are active substances that could potentially affect the results of the study. Antidotes are used to counteract the effects of toxic substances and are not relevant to this study.

Researchers Are Conducting a Study to Determine the Effects of the Mineral