Humid Heat

Humid heat refers to the amount of heat required to increase the temperature of a substance consisting of a gas and its accompanying vapor by one degree Fahrenheit (1°F). It is a measure of the energy needed to raise the temperature of a substance that contains both gas and vapor components.

Latent Heat

Latent heat, on the other hand, refers to the heat energy required to change the phase of a substance without a change in temperature. It is the heat absorbed or released when a substance undergoes a phase change, such as from a solid to a liquid or a liquid to a gas. Latent heat does not directly contribute to changing the temperature of a substance, but rather to changing its state.

Specific Heat

Specific heat is the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius (1°C). It is a property that varies for different substances and is typically measured in units of energy per unit mass per degree Celsius (J/kg°C). Specific heat is used to calculate the amount of heat transfer in a system when the temperature change and mass of the substance are known.

Sensible Heat

Sensible heat refers to the heat energy added or removed from a substance that results in a change in temperature. It is the heat that can be measured by a thermometer and is associated with a change in the kinetic energy of the substance's molecules. Sensible heat does not involve a change in phase, but rather a change in temperature.

Explanation

The correct answer to the question is option B, humid heat. Humid heat specifically refers to the heat required to increase the temperature of a substance consisting of a gas and its accompanying vapor by one degree Fahrenheit. This term is used to describe the energy needed to raise the temperature of a substance that contains both gas and vapor components.

In contrast, latent heat refers to the heat energy required to change the phase of a substance without a change in temperature, while specific heat refers to the heat required to raise the temperature of a unit mass of a substance by one degree Celsius. Sensible heat refers to the heat energy added or removed from a substance resulting in a change in temperature.

By understanding the definitions and distinctions between these terms, we can conclude that the correct answer is indeed option B, humid heat.