<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.
The answer is a it’s the only one that truly makes sense
As long as isn't really used for exceptions.
Well, maybe in things like "You can have ice cream <em>as long as </em>you eat your veggies." Then it's a little like saying "You can have ice cream <em>if </em>you eat your veggies"
But
"You can have ice cream, <em>but </em>you need to eat your veggies first."
Except
"Everyone can have ice cream, except for Gally"
Barring
I'm not really sure about this one...
Um, I hope this helps!