Which explains how air from the equator influences temperatures of land masses further north and south of it?

a.
sunlight absorbed at the equator warms the air above and causes convection currents that travel north and south to influence temperatures there.

b.
sunlight absorbed at the equator warms the air above and causes radiation currents that travel north and south to influence temperatures there.

c.
sunlight absorbed at the equator warms the air above and causes conduction currents that travel north and south to influence temperatures there.

d.
sunlight absorbed at the equator warms the air above and causes convergent currents that travel north and south to influence temperatures there.