Which of the following describes fat utilization during physical activity?
a. fat that is stored closest to the exercising muscle is oxidized first resulting in 'spot reduction'b. fat represents the major fuel source during sustained, moderate activityc. fat oxidation makes more of a contribution as the intensity of the exercise increasesd. fat is burned in higher quantities during short, high intensity exercises than prolonged, low intensity exercises

The answer is b)fat represents the major fuel source during sustained, moderate activity

Explanation:

During physical exercise, the majority use of fat will mainly be due to the intensity and duration of said exercise. According to the exercise, the intensity of the fat decreases and the fat contribution increases. For example, during low intensity and very long duration exercises, an increase in the use of fat begins as the only source of energy.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;