Which type of assessment measures the amount of subcutaneous fat in relation to total body fat?

The skinfold assessment is the correct choice as it specifically measures subcutaneous fat, which refers to the fat that lies just beneath the skin. This method involves using calipers to pinch the skin at specific sites on the body and measuring the thickness of the skinfolds. These measurements are then used to estimate total body fat percentage, giving insights into an individual's body composition.

While body mass index (BMI) is a widely used measure, it does not differentiate between fat mass and lean mass, only providing a general idea of whether an individual’s weight is appropriate for their height. The Bod Pod employs air displacement plethysmography to estimate body composition, focusing primarily on total body volume and density without specifically targeting subcutaneous fat. Hydrostatic weighing, another technique for assessing body composition, uses water displacement to measure body density and derive body fat percentage but does not specifically isolate subcutaneous fat. Hence, the skinfold method is uniquely effective for this particular assessment of body fat composition.