The correct answer is B. Revenge.
Retribution is the act of inflicting punishment in return for a wrong or injury. It is often associated with revenge, but it can also be used in a more general sense to refer to any form of punishment or penalty.
Contempt is a feeling of deep disrespect or scorn. It can be expressed in words or actions, and it can be directed at a person, group, or idea.
Punishment is the act of imposing a penalty on someone for an offense or wrongdoing. It can be carried out by the state, a private individual, or a group.
A discount is a reduction in the price of something. It can be offered for a variety of reasons, such as to attract customers, to clear stock, or to reward loyalty.
In the context of the question, the correct answer is B. Revenge. This is because retribution is often associated with revenge, and the other options do not have the same meaning.