Question

Which of the following supply and demand situations definitely involves a positive externality?

a. An Sinternal or Dinternal curve lies to the right of the corresponding Ssocial or Dsocial curve.

b. An Sinternal or Dinternal curve lies to the left of the corresponding Ssocial or Dsocial curve.

c. An Sinternal curve lies to the left or right of the corresponding Ssocial curve.

d. A Dinternal curve lies to the left or right of the corresponding Dsocial curve.

e. The externality has not been internalized through government intervention.

Answer

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