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Running, or swift walking, uses the major muscle groups, making it the most efficient form of cardiovascular exercise _______. It also lowers blood pressure and helps diabetics by improving glucose tolerance and reducing insulin resistance.

  • A.It has been shown to have a positive effect on blood fats by reducing cholesterol levels
  • B.During running, the speed at which the runner moves can be calculated by multiplying the steps per second by the stride length
  • C.Running is a complex, coordinated process which involves the entire body
  • D.Every human being runs differently, but certain general features of running motion are common

Answer: A

Correct answer: It has been shown to have a positive effect on blood fats by reducing cholesterol levels

The sentence after the blank begins it also lowers blood pressure, and also requires a benefit to have been named already. Only the keyed option names one; the others describe how running works mechanically.

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