Answer:
Differences in water density drive deep water currents.
Explanation:
Deep ocean currents (also known as Thermohaline Circulation) are caused by: The sinking and transport of large masses of cool water gives rise to the thermohaline circulation, which is driven by <u>density </u>gradients due to variations in temperature and salinity.
I would say A.
but C would be my second guess
You get to see the way the person that’s telling the story viewed the situation or topic.