Why the walls and roof of the green house are made of glass ?

Options

A. The glass absorbs most of the radiations coming from the sun
B. The glass transmits the radiations coming from the sun but not those given out by the bodies inside
C. The glass equally transmits the radiations from the sun as well as those from inside
D. For some reason other than those mentioned above

Answer

C

Explanation

Glass allows most of the solar radiation to pass through it which heats the greenhouse material and when this material radiates radiation most of this is absorbed by glass and heat is trapped inside which keeps the greenhouse warm hence option (C) is correct.