Which of the following statements is true?A. The federal government has no authority to protect the health of the population. B. The federal government is explicitly mandated in the Constitution to protect the health of the population. C. The federal government uses the power of eminent domain to protect the health of the population. D. The federal government sometimes uses the interstate commerce provision of the Constitution to protect the health of the population.

A. hannah wants to improve her cardiorespiratory fitness levels, so she begins to alternate running on a flat track with running up stadium stairs. this principle is known as a type b tedium c time d frequency 2. charlie is easily winded during soccer practice and wants to improve his cardiorespiratory fitness. which activity would be best for him to choose? a lifting weights b walking from one class to another c running in a 5k race d riding a bike at a leisurely pace 3. felicia just began running this past month, but since she continues to run the exact same route and exact same distance every day, she is growing bored with her runs. this principle is known as a tedium b progression c specificity d reversibility