Answer:
Choice B., infrared radiation
Step-by-step explanation:
A gas in atmosphere which allows the incoming of the solar radiation to reach Earth's surface and on the other hand also absorbs these radiation which are re-emitted as heat, trapping heat in atmosphere and causing temperature to rise is called green house effect.
For example, carbon dioxide is a greenhouse gas which traps heat from sun resulting in the warming the planet .
Thus, infrared radiations which is a source of heat is reflected back to the Earth’s surface by greenhouse gases.