Marginal analysis is to allocative efficiency as social optimality is to what?

Marginal analysis is a method used to evaluate the additional benefits and costs of a decision, helping to achieve allocative efficiency, which means resources are used where they are most valued. Similarly, social optimality refers to a situation where resources are distributed in a way that maximizes overall societal welfare. This can be understood as the point where the total benefits to society from a good or service equal the total costs of producing it. For example, if a community decides to build a park, social optimality occurs when the enjoyment and health benefits to the community from the park match the costs of building and maintaining it. In both cases, the goal is to ensure that resources are used effectively to benefit society as a whole.