The answer is A.) Deflation
The correct answer should be Troy
<span>Gypsum originated 200 million years
ago as a result of marine deposits when part of what are now our continents
were immense oceanic extensions. During this period some seas were dried
leaving plaster beds that were covered to be discovered later by man. Since the
time of memory plaster has coexisted with humanity and constitutes one of the
oldest building materials.</span>
