Increased property values from improvements to other homes in your neighborhood O is a good example of a positive externality. is a good example of a negative externality. should definitely be reduced to zero. never happens. Question 17 (1 point) Listen Externalities can cause market failure because people refuse to trade goods with associated externalities. the optimal quantity of the good will always be zero when there's an externality. O all the benefits and costs are fully captured by those buying and selling the good/service. O all the benefits and costs are not fully captured by those buying and selling the good/service