Which of the following electromagnetic wave plays an important role in maintaining the earth's warmth or average temperature through the greenhouse effect?

Infrared radiation plays an important role in maintaining the earth's warmth through greenhouse effect. Incoming visible radiation when passes relatively easily through the atmosphere is absorbed by the earth's surface and radiated as infrared (longer wavelength) radiation. This radiation is trapped by greenhouse gases such as carbon dioxide and water vapor. In this way an average temperature is maintained.