Numerous ancient MAyan cities have been discovered in the yucatan peninsula in recent decades. the ruins lack any evidence of destruction by invading forces, internal revolts, or disease and appear simply to have anve been abandoned. Some archaeologists have theorized that the cities were abandoned due to a severe drought known to have ocurred in the region between 800 and 1000 A.D.

Which of the following, if true, most strongly suppoorts the archaeologists' theory?

B) No monumental inscriptions created after 900 A.D. have been fouund in these cities, but inscriptions dating before that time have been found in abundance.
C) studies of yucatan lake sediment cores provide conclusive evidence that a prolonged drought ocurred in the region from 800 to 1000 A.D.

The answer is B but I don't know what is wrong with C. First archaeologists theorize but then some studies conclude that a drought ocurred between 800 and 1000 A.D. what is wrong wth it?

Thank you!

In this one, the occurrence of the drought is not in question. The stimulus calls it a "a severe drought KNOWN to have occurred in the region...." This means that confirming the existence of the drought won't strengthen the question. We have to talk about the timetable surrounding the departure of the Mayans.

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