Which of the following gases is considered the primary anthropogenic contributor to the enhanced greenhouse effect and global warming?

💡 Explanation:

Carbon Dioxide (CO2) is the most significant anthropogenic (human-caused) greenhouse gas, primarily released through the burning of fossil fuels and deforestation. Its high concentration and long atmospheric lifetime make it the leading driver of the enhanced greenhouse effect and global warming, despite other gases like methane having a higher global warming potential per molecule over shorter periods.