Option 4, "All of the above," is the correct answer because all the gases listed in the options—carbon dioxide, methane, and water vapour—are indeed greenhouse gases. Here's a detailed explanation supporting this: 1. Carbon Dioxide (CO2): Carbon dioxide is one of the most well-known greenhouse gases. It is released through natural processes such as respiration and volcanic eruptions, as well as human activities like deforestation and burning fossil fuels. CO2…Read More