Question ID:PT37 S2 Q6 Passage:Advertisement:  At most jewelry stores, the person assessing the diamond is the person selling it, so you can see why an assessor might say that a diamond is of higher quality than it really is. But because all diamonds sold at Gem World are certified in writing, you're assured of a fair price when purchasing a diamond from Gem World. Stem:The reasoning in the advertisement would be most strengthened if which one of the following were true? Correct Answer Choice:EChoice A:Many jewelry stores other than Gem World also provide written certification of the quality of their diamonds. Choice B:The certifications of diamonds at Gem World are written by people with years of experience in appraising gems. Choice C:The diamonds sold at Gem World are generally of higher quality than those sold at other jewelry stores. Choice D:The diamond market is so volatile that prices of the most expensive diamonds can change by hundreds of dollars from one day to the next. Choice E:The written certifications of diamonds at Gem World are provided by an independent company of gem specialists.