Question

the ____ is the coldest layer of the atmosphere.
a. troposphere
b. stratosphere
c. mesosphere
d. thermosphere
please select the best answer from the choices provided

Explanation:

The mesosphere is the coldest layer of the atmosphere. Temperatures in the mesosphere can drop to around -90°C (-130°F) at its upper boundary. The troposphere is where weather occurs and is heated from the ground up. The stratosphere contains the ozone layer and warms with altitude. The thermosphere is very hot due to absorption of high - energy radiation.

Answer:

C. mesosphere