I would say B. Scapegoat theory. Because the others wouldn't make any sense.
The higher the slope, the more difficult the course is. When the slope rating system was first put into effect, the USGA set the slope for an "average" golf course at 113; however, not many 18-hole golf courses have slope ratings that low. Some do, but the real-world average is higher than 113.
All muscle cells share four main properties that distinguish them from other cells. These are Excitability, Contractility, Extensibility and Elasticity.
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C. that is your answer because as your heart contracts, blood flows and IF your heart is not strong enough, it will be hard to breathe.