Answer:
4- Air temperature gets cooler as you move away from Earth's surface.
Step-by-step explanation:
The troposphere is the most insignificant layer of our air. It is the layer in which life survival is possible and pretty much all atmospheres occur in this least layer. Most fogs appear here, generally in light of the fact that 99% of the water vapor noticeable all around is found in the troposphere. As you move higher in the troposphere the air temperature gets cooler.
Thus, statement 4 with this concept is considered as true statement.