Consider the below image of a bather easily floating in the Dead Sea, exerting no effort to do so. 
Why is it so easy for the sunbather to stay afloat?
A) The thermocline is right near the surface and the temperature differential near her helps her to float.
B) The low water density in this region helps buoyancy.
C) The high biological activity produces gases to buoy her.
D) The high salinity in that body of water buoys her.
Correct Answer:
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