Correct option is C
Carbon dioxide (CO₂) plays the primary role in the greenhouse effect. The greenhouse effect occurs when greenhouse gases, such as CO₂, trap heat in the Earth’s atmosphere, leading to an increase in global temperatures. While other gases like methane (CH₄) and water vapor also contribute, CO₂ is considered the most significant due to its large volume and longer atmospheric lifespan.
H₂ (Hydrogen) and N₂ (Nitrogen) do not significantly contribute to the greenhouse effect as they do not trap heat.
SO₂ (Sulfur dioxide) is primarily associated with acid rain, not the greenhouse effect.
