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The origin of the ocean currents is related to

  • A.Gravitational force
  • B.Winds
  • C.Salinity and density
  • D.All of the above

Answer: D

The origin of ocean currents is related to all of these: gravitational force of the sun and moon, which causes tides and modifies currents, winds, which drive the surface currents, and differences in salinity and density, which set up currents between waters of different density. Since each factor contributes, the answer is 'All of the above', option D. Winds are the main driver of surface currents, density differences cause vertical movement and the pull of the sun and moon adds to tidal currents, so all three act, as the key states.

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