Question

convection
conduction
heat transfer in the image.
radiation

Explanation:

The image shows a cup of coffee with steam rising. Convection is the transfer of heat through the movement of fluids (liquids or gases). In this case, the steam (a gas) is rising, which is an example of convection. Conduction is heat transfer through direct contact (not shown here as there's no mention of direct solid - to - solid contact). Radiation is heat transfer through electromagnetic waves (not depicted in the steam - rising example).

Answer:

Convection