The coldest region of the Earth’s atmosphere is__________?

A. Exosphere
B. Thermosphere
C. Stratopause
D. Mesopause

Submitted by: Fida Ur Rasool

The top of the mesosphere, called the Mesopause, is the coldest part of Earth’s atmosphere. Temperatures in the upper mesosphere fall as low as −101 °C (172 K; −150 °F), varying according to latitude and season.

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