Question ID:PT67 S2 Q11 Passage:Scientists examined diamonds that were formed on Earth about 2.9 billion years ago. These diamonds had a higher-than-normal concentration of sulfur-33. This concentration can be explained only by certain chemical reactions that are stimulated by ultraviolet light. If there had been more than a trace of oxygen in Earth's atmosphere 2.9 billion years ago, then not enough ultraviolet light would have reached Earth's surface to stimulate the chemical reactions. Stem:The information above most strongly supports which one of the following? Correct Answer Choice:CChoice A:Most diamonds with higher-than-normal concentrations of sulfur-33 were formed at least 2.9 billion years ago. Choice B:Ultraviolet light causes the oxygen in Earth's atmosphere to react chemically with sulfur-33. Choice C:Earth's atmosphere contained very little, if any, oxygen 2.9 billion years ago. Choice D:Sulfur-33 is rarely found in diamonds that were formed more recently than 2.9 billion years ago. Choice E:The formation of diamonds occurs only in the presence of ultraviolet light.