Final answer:
Sensible heat is responsible for adding superheat to the refrigerant, which occurs after the refrigerant has turned into vapor and continues to absorb heat without changing its state.
Step-by-step explanation:
The name of the heat that adds superheat to the refrigerant is A. Sensible heat. Sensible heat refers to the type of heat that results in a temperature change of the substance without changing its state. In the context of refrigerants in air conditioning or refrigeration systems, when the refrigerant absorbs sensible heat after it has turned into vapor (post-evaporation), it enters a state known as superheat. Superheating of the vapor occurs at a temperature and pressure where it will not condense. This is in contrast with latent heat, which is the heat involved in changing the state of a substance (like during condensation or vaporization) without changing its temperature.