A Researcher Tests the Hypothesis That Large,daily Doses of Vitamin

question 14

Multiple Choice

A researcher tests the hypothesis that large,daily doses of vitamin C help protect against catching the common cold.What would be the best experimental and control group to test this hypothesis?

• A)Experimental group: takes a large dose of vitamin C daily;
• Control group: takes nothing
• B)Experimental group: people with a cold are administered vitamin C daily;
• Control group: people without a cold are not administered vitamin C
• C)Experimental group: takes a large dose of vitamin C daily;
• Control group: takes a large weekly dose of vitamin C
• D)Experimental group: takes a large,daily dose of vitamin C;

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