An externality arises when a firm or person engages in an activity that affects the well-being of a third party, yet neither pays nor receives any compensation for that effect. If the impact on the third party is beneficial, it is called a externality.

Fabian got into an accident on his way to work. he had multiple fractures in his leg. his doctor advised strict bed rest for at least three months. fabian is a freelance wildlife photographer who usually works on a contract basis, and this is his primary source of income. before the accident, fabian was planning his finances. which goal of his financial plan would fabian in getting through without pay for the next three months? the goal that requires the creation of a/an would fabian get through the next three months without pay.