What is the unit for specific heat capacity?

The unit for specific heat capacity is derived from the definition of specific heat, which is the amount of heat required to change the temperature of a unit mass of a substance by one degree Celsius. Therefore, specific heat capacity can be expressed as energy (in joules) divided by mass (in kilograms) and the change in temperature (in degrees Celsius).

This brings us to the unit of specific heat capacity: joules per kilogram per degree Celsius. This unit effectively conveys how much energy is needed to raise the temperature of one kilogram of a material by one degree Celsius. Other choices provided do not correctly correspond to the definition or measurement related to specific heat capacity, as they either mix different physical quantities or describe unrelated properties.