Question

jan is holding an ice - cube. what causes the ice to melt?
thermal energy from the ice is transferred to the air.
thermal energy from jans hand is transferred to the ice.
the air absorbs thermal energy from jans hand.
jans hand absorbs thermal energy from the ice.

Explanation:

Heat transfer occurs from a warmer object to a cooler one. Jan's hand is warmer than the ice - cube. Thermal energy will transfer from Jan's hand to the ice cube.

Answer:

Thermal energy from Jan's hand is transferred to the ice.