Final answer:
Carbon Dioxide (CO2) is a greenhouse gas that contributes significantly to global warming, unlike oxygen, nitrogen, and argon, which do not absorb and re-radiate thermal infrared energy.
Step-by-step explanation:
The question asks which of the listed gases is a greenhouse gas. The correct answer is e. Carbon Dioxide. Greenhouse gases are responsible for the greenhouse effect, which traps heat in the Earth's atmosphere. Among the options provided, carbon dioxide is a well-known greenhouse gas, significantly contributing to global warming due to human activities such as the burning of fossil fuels and deforestation. Other greenhouse gases include methane (CH4), nitrous oxide (N2O), and water vapor (H2O).
Oxygen, nitrogen, and argon, while common in the atmosphere, are not greenhouse gases because they do not effectively absorb and re-radiate thermal infrared energy.