Apigouvian subsidy leads to a socially efficient outcome by

A pigouvian subsidy leads to a socially efficient outcome by raising individual's marginal benefit from consumption

Explanation:

A pigouvian subsidy is a subsidy that is used to encourage behaviour that have positive effects on others who are not involved or society at large. Behaviors or actions that are a benefit to others who are not involved in the transaction are called positive externalities. This is closely related to the idea of a pigouvian tax.

answer; /// i believe its (slavery) to be the correct check luck.