Answer:
C. trap heat in Earth's atmosphere.
Step-by-step explanation:
Greenhouse gases -
These gases are responsible to absorb the radiation of the sun , and resists the planet earth from freezing , because of the trapped radiation , is referred to as the greenhouse gases .
The example of greenhouse gases are -
water vapor , methane , carbon dioxide , ozone , nitrous oxide etc.
Greenhouse gases helps to maintain the temperature of the planet earth to sustain life .
Hence , from the given question ,
The correct option is C.