As you sit on the beach, you notice that the breeze, which had been blowing toward the water from the land, shifts so that it is blowing off the water toward land. What event has just occurred?

Clouds have begun to form over the water.
The temperature over the land has reached its highest point for that day.
The temperature over the land has become higher than the temperature over the water.
The temperature over the water has become higher than the temperature over the land.