Which property primarily makes a greenhouse gas highly potent (high GWP)?

💡 Explanation:

The Global Warming Potential (GWP) of a gas is determined by its atmospheric lifetime and its radiative efficiency (the ability to trap heat). Gases with a high capacity for absorbing infrared radiation (a measure of radiative efficiency) are highly potent because each molecule traps a large amount of outgoing terrestrial heat. A long atmospheric lifetime further contributes to a high GWP over a specified time horizon (e.g., 100 years).