It affects your lungs the most.
The biggest is the belly and the waist
The statement 'circuit training is a program that moves through a prescribed set of exercises' BEST describes circuit training. It involves endurance and resistance training.
Circuit training is a type of routine involving endurance and resistance training, as well as high-intensity aerobics.
Circuit training has into account a programmed set of resistance exercises that help to keep heart rate elevated.
In consequence, circuit training represents an exercise program that combinates cardiovascular training with resistance training.
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Pretty sure the answer is letter C.Hope I helped.