Question

which of these is an example of conduction?
you burn your feet on the hot sidewalk.
you stand in the sunshine and feel warm.
you sit near a campfire and feel warm.

Explanation:

Conduction is the transfer of heat through direct contact. When you burn your feet on the hot sidewalk, there is direct contact between your feet and the sidewalk, allowing heat to transfer via conduction. Standing in sunshine (radiation) and sitting near a campfire (convection and radiation) are not conduction.

Answer:

You burn your feet on the hot sidewalk.