What occurs at night related to air movement?

At night, the behavior of air movement is influenced by temperature differences between land and water. During the evening and into the night, land cools down more quickly than the ocean. This temperature difference creates a situation where cooler air over the land is denser than the warmer air over the water. Consequently, the cooler, denser air over the land tends to sink and move towards the ocean.

This phenomenon results in cool air moving offshore from the land into the ocean. The movement of the cool air takes place as the land cools significantly while the ocean retains heat, which causes the air above the land to become relatively cooler and denser. Thus, the correct answer reflects this principle of convection and air pressure differences during the night.

The other options involve incorrect assumptions about the temperature and movement of air, which do not align with the actual dynamics occurring at night.