In which atmospheric layer does most of the Earth's weather occur? 

A)  the mesosphere 
B)  the thermosphere 
C)  the stratosphere 
D)  the troposphere

Atmospheric Layer

A stratum of gases surrounding a planet that is held in place by the gravity of that body, categorized into different layers based on temperature gradient and other properties.

Earth's Weather

The state of the atmosphere at a given time and place, including elements like temperature, humidity, precipitation, and wind.

Troposphere

The lowest layer of Earth's atmosphere, extending from the surface to about 8 to 15 kilometers high, where weather phenomena occur.