An increase in the marginal social benefit of consuming a public good should result in an increase in the optimal quantity of the good.
Option B is Correct
Step-by-step explanation:
The incremental advantage of a company perceived by society as the sum of marginal public advantages and marginal secrecy.
For example, a customer is prepared to pay five dollars for an ice cream, which means that the marginal advantage of eating ice cream is five dollars.
There is also a lack of deadweight in the case of a favourable externality, as the total social benefit at consumer volume is higher than the marginal social cost.
When there is externality, the socially optimal result is not obtained. There are a number of government changes from' command-and-control' to market-based policies.