Justification is the act of providing an explanation or a reason for an action taken. It is the process of demonstrating that a decision is reasonable and valid, and is often used to explain why a particular course of action was taken. There are two main types of justification: legal and moral. Legal justification is based on laws and regulations, and is used to explain why a certain course of action is legal. Moral justification is based on ethical values and is used to explain why a certain course of action is morally correct. Both types of justification must be grounded in evidence and sound reasoning.