Question

Please someone help I'm in a test I only have 20 minutes left...

If the Greenland ice sheet melted completely due to warmer temperatures, which of the following describes the effect?
A. carbon dioxide concentrations over opal increase.
B. average global temperatures will continue to decrease rapidly.
C. the city of Miami, Florida, would be underwater.
D. the water surrounding Greenland will become more salty.
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Answer 1

Ice sheets contain enormous quantities of frozen water. If the Greenland Ice Sheet melted, scientists estimate that the sea level would rise about 6 meters (20 feet). If the Antarctic Ice Sheet melted, the sea level would rise by about 60 meters (200 feet).

So, most likely, C. the city of Miami, Florida, would be underwater.