Final answer:
The most accessible and affordable method for estimating body fat in large populations is skinfole thickness, which uses calipers to measure skin folds and compare them to standard charts. correct answer is E .
Step-by-step explanation:
The most accessible and affordable method to estimate body fat in large populations is skinfold thickness. Skinfole thickness measurement uses a caliper to assess body fatness by measuring the thickness of skin folds at various parts of the body. This method is noninvasive, fairly accurate when compared to standard charts, and cost-effective. While dual-energy X-ray absorptiometry (DEXA) provides detailed measurements, it can be expensive and less accessible for large-scale research. Similarly, underwater weighing and air displacement are precise but require specialized equipment and are not as cost-effective or convenient for large populations. BMI is quick and easy to calculate, but it may not accurately reflect body fat content, as it does not differentiate between muscle and fat mass. Other methods such as BMI, air displacement, underwater weighing, and dual-energy X-ray absorptiometry (DEXA) are more expensive and technically challenging