fitzwat2 wrote:
I'd like to keep this post going. I have a question from the GMAT book from Manhattan Prep and in the question here it looks like which is referring to aclause.
Originally developed for detecting air pollutants, a technique called proton-induced x-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it, is finding uses in medicine, archeology, and criminology.
A.) Originally developed for detecting air pollutants, a technique called proton-induced
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