what happens during heat transfer? heat always flows from warm to hot. heat always flows from warm to cool…

what happens during heat transfer? heat always flows from warm to hot. heat always flows from warm to cool. heat always flows from cool to warm.
Answer
Brief Explanations:
Heat transfer occurs due to a temperature - difference. According to the second law of thermodynamics, heat spontaneously flows from a region of higher temperature (warm) to a region of lower temperature (cool).
Answer:
Heat always flows from warm to cool.