Final answer:
Water vapor and CO2 are strong absorbers of infrared radiation and poor absorbers of visible light radiation. The correct answer is a) Infrared; Visible.
Step-by-step explanation:
H2O (water vapor) and carbon dioxide are strong absorbers of infrared radiation and poor absorbers of visible light radiation. The correct answer to your question is a) Infrared; Visible. Water vapor is the dominant greenhouse gas that absorbs thermal infrared radiation, followed by CO2. Neither water vapor nor carbon dioxide are effective at absorbing ultraviolet radiation, which has higher energy levels than infrared radiation. As a result, they act as greenhouse gases by trapping heat within Earth's atmosphere.