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Two students are analyzing Earth’s ocean currents. Student A says that the purple arrows in the diagram can travel across the continents, but student B says that they cannot. Choose the explanation that would prove student B’s reasoning correct.


The high salinity of ocean currents propels the convection.
The high salinity of ocean currents propels the convection.

Air currents push ocean currents over continents.
Air currents push ocean currents over continents.

Air currents are unable to travel across continents.
Air currents are unable to travel across continents.

Ocean currents are shaped by continental deflection and do not move across land.