Final answer:
Distributive justice requires that the criteria used to distribute a scarce resource be applied equally.
Step-by-step explanation:
The principle that requires that the criteria used to distribute a scarce resource be applied equally is known as distributive justice. Distributive justice refers to the fair distribution of goods and services within a society. It ensures that everyone has equal access to these resources and that they are allocated based on people's needs. For example, if there is a limited amount of food available, distributive justice would require that all individuals be given an equal share to meet their basic needs.