The correct answer is Latent Heat of Vaporization. Explanation & Key Takeaways: • The amount of energy required to change the liquid to gas and vice versa without any change in temperature is termed as latent heat of vaporization. • Heat is a form of energy that flows from a relatively warmer object to a relatively cooler object. • Latent Heat: The amount of heat required to convert a unit mass of the solid into liquid without a change in temperature is called the latent heat of the material. • Specific Heat: The amount of heat required to increase the temperature of a unit mass by one unit °C is called the specific heat of the material. • The latent heat of fusion is the heat required for solid-liquid change.