Final answer:
The caliper method is used to measure body fat by assessing the thickness of skinfolds with a caliper tool(option c).
Step-by-step explanation:
The method that can be used to measure fat is C)
The caliper method. This involves using a caliper to measure the thickness of skinfolds at different sites on the body. This measurement is then used to estimate body fat percentage. Other methods mentioned, such as stick method, dry measuring cup method, and liquid measuring cup method, are not used for measuring body fat; they are typically used for measuring ingredients in cooking or baking. The caliper method is a noninvasive and fairly accurate way to assess body fat compared to more expensive and technically challenging methods.