Which gas is not a greenhouse gas, a methane, b water vapor, c, carbon dioxide, d, nitrogen, e, ozone

The answer is: D. Nitrogen.

Greenhouse gas is a gas mixed in the atmosphere that absorbs the infrared radiation emitted by the earth’s surface.

The two main gases responsible for the greenhouse effect are:  water vapour and carbon dioxide.

Most often greenhouse gases are carbon dioxide and methane. They come from burning multiple substances: coal, petroleum, natural gas.

Carbon dioxide (CO₂) and energy (heat) is produced by combustion of fossil fuels, that energy is used for producing electricity (the heat energy of combustion is converted into mechanical energy).