Which metric is explicitly listed in the material as a body composition measure?

• A. Body Mass Index
• B. Lean Body Mass
• C. Bone Density
• D. Body Fat Ratio

Answer: (D)

Understanding body composition means looking at how much of the body is fat versus lean tissue. The metric explicitly listed in the material as a body composition measure is body fat ratio because it directly expresses the amount of fat relative to total body weight.

Body Mass Index uses height and weight and doesn’t distinguish fat from lean tissue, so it isn’t a direct body composition measure. Lean body mass is the non-fat portion of the body and is tied to composition, but the item highlighted here points to body fat ratio as the explicit measure. Bone density reflects mineral content in bone, not the fat-to-lean tissue mix, so it isn’t a body composition metric.