Study the image.

a house on a beach near the ocean. point 1 is over the house, arrow is pointing up. point 2 is over the ocean, with arrows pointing away from the land. point 3 is over the ocean with the arrow pointing down. point 4 is in the ocean with arrows pointing toward land.

what do the arrows at point 3 indicate?

cool air is above water.
warm air is above land.
warm air is cooling quickly.
cool air is warming quickly.