Sunlight is an examples of
A. Conduction
B. Convection
C. Radiation

There is no medium between the sun and Earth other than very thin solar wind. Without a medium, no conduction or convection. That leaves only radiation, which is what you feel on your skin when you step into the sunlight. Of course, once the heat is transferred to the Earth by radiation, it now has a medium. So the answer is C. Radiation

The answer is option b.