The correct option is
D carbon dioxide
The green house gas is
CO2.
A
greenhouse gas (sometimes abbreviated
GHG) is a gas
in an atmosphere that absorbs
and emits
radiation within the thermal infrared
range. This process is the fundamental cause of the green house effect.
The primary greenhouse gases in the Earth's atmophere
are water vapor,
CO2,
CH4 , nitrou oxide and Ozone
.
Thus Option D is correct.