(Solved): 14) Which one of the following may be considered an externality? a. the enjoyment of watching a movi ...

14) Which one of the following may be considered an externality? a. the enjoyment of watching a movie. b. the pleasure of having neighbors who beautify and properly maintain their yards. c. greenhouse effect caused by some human activities. d. all of the above. e. only (b) and (c) above.