Question 20 Externalities are unintended costs or benefits that are imposed on unsuspecting people and that result from: intentional damages. the economic activity of others. excessive losses. poor planning excessive costs. Question 16 An externality is: always a detriment to the recipient. an act, caused by a firm located in this country, which has an effect on a person in a foreign country. unintended benefits or costs imposed on third parties as a result of economic activity. always a benefit to the recipient o an activity that occurs in a business which is unknown to management