Answer:
A. and is likely the basis for the Epic of Gilgamesh and the biblical epic of Noah's Ark.
Explanation:
These are two common stories about the great flood. They were also similar circumstances.
Mediterranean water flowed into the Black Sea through its single connection: the Bosporus Strait.
The Mediterranean water that does inflow mixes with fresher Black Sea water, and as its salinity and density decreases, the Mediterranean water forms plume-shaped features. These plumes flow away from the mouth of the strait and descend until their density matches that of surrounding waters, usually at depths of 100 to 600 meters.
This creates some sort of stormy environment, which is reminiscent of the two religious stories.