<u>Answer:</u>
The author refers to the FDA's approval of acupuncture needles to clarify the methods used by acupuncturists. Here, the correct option is A.
<u>Explanation:</u>
This excerpt from “Acupuncture: Help or Hype?” by Tracy Wilson clarifies as well as informs the readers about certain guidelines provided by the U.S. Food and Drug Administration or FDA about the use of acupuncture needles.
Healthcare is of utmost importance for any country. To ensure that is not messed up, FDA has mentioned points like only licensed practitioners would use acupuncture needles, the needles will have to be sterile and non-toxic and can be used only once and not more.
So we know the bus can travel 2,160 miles in 36 hours
to find out how many hours the bus travels in an hour we simply divide the total miles given (2,160) by the total hours given (36)
2160 miles/36 hours = 60 miles
so the average distance the bus travels in 1 hour is 60 miles
