Answer:
The correct answer is Option D. ammonia and methane.
Explanation: The visible clouds on Jupiter and Saturn are made of ammonia gas, while the clouds of Neptune are made of methane gas.
Atmosphere of Neptune is made up there gases i. e. Hydrogen, Methane and Helium gas.
Hydrogen is present in large amount 80%. Helium is 19% in the atmosphere. Methane is present in very low amount i. e. 1%.
