In which layer of the atmosphere does weather occur?

Weather occurs in the Troposphere, which is the lowest layer of the Earth's atmosphere. This layer extends from the Earth's surface up to an altitude of about 7 to 20 kilometers. It is the layer where all the weather phenomena such as clouds, rain, snow, thunderstorms, and tornadoes occur. The Troposphere is also the layer where most of the Earth's air mass is contained, and it is where we live and breathe. The Stratosphere is the layer above the Troposphere, and it contains the ozone layer which protects us from harmful UV radiation. The Mesosphere is the layer above the Stratosphere, and it is the coldest layer of the atmosphere. The Thermosphere is the layer above the Mesosphere, and it is the layer where the Northern and Southern Lights occur. Thus, the correct answer is C.