Which of the following is NOT a method for measuring body composition?

The correct answer is based on the definition of body composition and the methods used to assess it. Body composition refers to the relative amount of fat and lean mass in the body, and accurate measurements typically focus on differentiating between these two types of mass.

Body Mass Index (BMI), waist circumference, and skinfold thickness are all recognized methods used to estimate body composition or assess body fat distribution. BMI provides a simple numerical measure calculated from height and weight, while waist circumference offers insights into visceral fat accumulation, which is crucial for understanding health risks. Skinfold thickness measurements involve using calipers to assess the thickness of skinfolds at various body sites, allowing for an estimation of overall body fat percentage.

In contrast, blood pressure measurement is a physiological assessment that evaluates the force exerted by circulating blood on the walls of blood vessels. While blood pressure is an important health indicator and can correlate with body composition in certain contexts (like obesity), it does not directly measure body composition itself. Therefore, it does not fit with the other methods listed, solidifying it as the correct answer to the question regarding which is NOT a method for measuring body composition.