Which of the following methods provides regional and whole body data?

DEXA, or Dual-Energy X-ray Absorptiometry, is a method that provides both regional and whole body data regarding body composition. It works by using low-level X-rays to differentiate between bone mass, lean tissue, and fat tissue. This allows for precise measurements not just of total body fat, but also how fat is distributed across different regions of the body, making it invaluable for understanding body composition in detail.

In terms of the other methods, the skin fold method primarily estimates body fat by measuring thickness at specific sites on the body but does not provide data that is as comprehensive or detailed with respect to specific body regions or the whole body. Air displacement (Bod Pod) provides an estimation of body volume and density, allowing for body fat percentage calculations, but is not designed to analyze different regions independently. Hydrostatic weighing measures body density through underwater weighing, which also gives a total body fat estimate but lacks the regional specificity that DEXA provides. Thus, the ability of DEXA to deliver both regional and whole body data distinguishes it as the correct answer.