The answer is (c), Carbon Monoxide.
Explanation: Greenhouse gases are atmospheric gases that trap heat and contribute to the Earth’s warming. Carbon monoxide (CO) is not considered a greenhouse gas. While it is a pollutant with other environmental concerns, it does not have the ability to trap infrared radiation like other greenhouse gases like methane, carbon dioxide, and nitrous oxide.
Why other options are incorrect:
(a) Methane:
Methane is a potent greenhouse gas with a significant impact on global warming.
(b) Carbon dioxide:
Carbon dioxide is the primary greenhouse gas, contributing significantly to the greenhouse effect.
(d) Ammonia:
While not as prevalent as carbon dioxide or methane, ammonia is considered a greenhouse gas due to its ability to absorb infrared radiation.