which of the following is an example of an externality?A. cigarette smoke that permeates an entire restaurantB. a flu shot that prevents a student from transmitting the virus to her roommateC. a beautiful flower garden outside of the local post officeD. All of the above

cigarette smoke filling an entire eatery, a flu vaccination that stops a student from spreading the illness to her roommates, a lovely flower garden in front of the neighborhood post office, etc.

Light pollution is indeed an illustration of an externality since people who utilize street lights have an impact on those who are passing by that is not offset by them. A benefit or expense that impacts a person who is neither directly involved in the creation or consumption of an item or service is known as an externality. Examples of a social cost include pollution, whereas a positive externality would be something like a technological spillover. Natural environmental externalities, such those related to public health illness or natural resources, are the norm. A firm that generates pollution that lowers the property values and health of locals is an example of a negative externality.

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