The correct answer is: All of the above.
1. Water Vapor: Water vapor is indeed a greenhouse gas. It is the most abundant greenhouse gas in the Earth's atmosphere, playing a crucial role in the Earth's natural greenhouse effect.
2. CH4 (Methane): Methane is another greenhouse gas. It is released into the atmosphere through natural processes like wetlands, as well as human activities such as agriculture and fossil fuel production.
3. CO₂ (Carbon Dioxide): Carbon dioxide is a well-known greenhouse gas that is a byproduct of human activities such as burning fossil fuels and deforestation. It contributes significantly to global warming and climate change.
By selecting "All of the above," you are acknowledging that water vapor, CH4 (Methane), and CO₂ (Carbon Dioxide) are all greenhouse gases that play a role in influencing the Earth's climate.
