Question

which is not an example of conduction?
hot tea warming the cup it is in
burning your tongue on the hot tea
blowing on the hot tea to cool it off

Explanation:

Conduction is heat transfer through direct contact. Hot tea warming the cup and burning your tongue are conduction examples as there is direct contact. Blowing on hot - tea is convection (transfer of heat by movement of a fluid, in this case air), not conduction.

Answer:

blowing on the hot tea to cool it off