Which of the Following Statements Is True

question 35

Multiple Choice

Which of the following statements is true?

• A)In the United States,scientists often conduct studies on animals before using human subjects.
• B)Before scientists begin their research,they usually develop a question to guide their study.
• C)An experimental study doesn't need to have a control group.
• D)In a single-blind study,both the researchers and the human subjects don't know their group assignments.

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Definitions:

Miles Apart

A measurement of distance separating two points or locations, expressed in miles.

Moving

The act of changing one's residence or business location.

Miles Apart

A measurement of distance in miles between two locations.

Miles Per Hour

A measure of speed indicating the number of miles traveled in one hour.