Which Statement Is Most Accurate

question 23

Multiple Choice

Which statement is most accurate?

• A) Neither the independent nor the dependent variable need be operationally defined.
• B) Only the dependent variable needs to be operationally defined.
• C) Only the independent variable needs to be operationally defined.
• D) Both the independent and dependent variables must be operationally defined.

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Definitions:

Cartilage

A flexible, semi-rigid connective tissue found in various parts of the body, including the joints, ears, and nose, which provides support and cushioning.

Thoracic Cavity

The part of the body located between the neck and the abdomen, enclosed by the ribs and containing the heart and lungs.

Alveolar Sac

The tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide occurs.

Trachea

The windpipe; a tube that connects the pharynx and larynx to the lungs, allowing the passage of air.