Answer:
c. methane gas absorbing red light and reflecting blue light
Explanation:
Both Uranus and Neptune's atmosphere are blue in color because:
Uranus and Neptune's atmosphere is composed up of gases which are hydrogen, helium and methane.
Methane is present in the Uranus and Neptune's upper atmosphere. It absorbs red light being emitted from the sun and reflects blue light into space.
This is the reason as to why Neptune Uranus and Neptune's atmosphere appears blue.
