Carbon dioxide is called greenhouse gas because it is :

Options

A. Used in green-house to increase plant growth
B. Transparent to heat but traps sunlight
C. Transparent to sunlight but traps heat (Infrared radiation)
D. Transparent to both sunlight and heat

Answer

C

Explanation

Earth surface re-emits heat in the form of infrared radiations but part of this does not escape into space as atmospheric gases e.g. carbon dioxide, methane etc absorb a major fraction of it.