According to Researchers, Which of the Following Vitamins Has a Positive

question 47

Multiple Choice

According to researchers, which of the following vitamins has a positive effect on the immune system?

• A) vitamin K
• B) vitamin C
• C) thiamin
• D) niacin

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Definitions:

Treatments

In a research context, interventions applied to subjects or conditions to observe effects.

Factors

Variables or elements that contribute to a particular result or situation.

Experiments

Scientific procedures undertaken to discover an unknown effect, test a hypothesis, or demonstrate a known fact.

Placebo

A substance or treatment with no therapeutic effect, often used as a control in testing new drugs.