Which of the following best describes the heat absorbed when a solid melts at constant temperature (at its melting point)? a. freezing point b. heat of fusion c. heat capacity d. specific heat

The correct answer is b. heat of fusion.<br /><br />The heat of fusion is the amount of heat energy required to change the state of a substance from solid to liquid (or vice versa) at its melting point without changing its temperature. This process occurs at a constant temperature, which is the melting point of the substance. The heat of fusion is a measure of the energy needed to overcome the intermolecular forces holding the solid together, allowing it to transition into a liquid state.