The transfer of heat takes place from the region of high temperature to the region of low temperature.
What is heat transfer?
It is a mechanism or phenomenon, which convey entropy and energy from one location to another. In order to attain thermodynamic equilibrium, the transferring of heat takes place from the warmer object to the cooler object.
The transferring of heat always takes place from the object at the higher temperature to the object with the lower temperature. The heat transfer in case of a gas is associated with a change in temperature.
Thus, the correct answer is option B, that is, high to low.
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