If companies who internalised an externality want to supply less at any given price compared to the original market supply, it must be a:Question 2Select one:A.Social externality.B.Positive externality. C.Negative externality.D.Network externality.

When a externality exists, the socially optimal level of output will be less than that resulting from a market.

Which of the following is true of a negative externality?Group of answer choicesThe government can use subsidies to encourage firms to internalize the externality.The government must take over the production of this good so that the externality can be internalized.Some benefits accrue to a third party.Its existence always requires corrective measures by the government.Some costs are borne by a third party.

Externality: What It Means in Economics

If the social benefit of consuming a good or a service exceeds the private benefit,Group of answer choicesthe market achieves economic efficiency.a negative externality exists.a positive externality exists.the sum of consumer surplus and producer surplus is maximised.

When there is an externality in a market,Group of answer choicesthe externality will move the market to an economically efficient equilibrium.the externality will cause the market price to be less than or greater than the equilibrium price.the government should use price controls to enable the market to reach equilibrium.government intervention may increase economic efficiency.