which is an example of convection currents?\nmarshmallows toasting over a campfire\na pot being heated by an…

Brief Explanations:

Convection is the transfer of heat by the movement of a fluid (liquid or gas). In a radiator, warm air rises and cool air is drawn in, creating a convection current. Toasting marshmallows over a camp - fire is radiation (heat transfer in the form of electromagnetic waves). A pot being heated by an electric burner is conduction (heat transfer through direct contact). Feet getting hot when stepping across sand is also conduction.

Answer:

a radiator emitting warm air and drawing in cool air