The correct explanation for how ocean currents affect climate is:
Ocean currents change the temperature of air masses. Warm ocean currents transport heat from the equator to the poles.
Warm ocean currents, such as the Gulf Stream, carry warm water from the equatorial regions toward the poles. This process influences the climate by warming the air masses above the currents, which can lead to milder temperatures in coastal regions and impact weather patterns. Conversely, cold ocean currents can have a cooling effect on air masses and climate.