question content area part 1 externalities part 2 a. do become reflected in market prices, so they do not adversely affect economic efficiency. b. may or may not become reflected in market prices, but do not have an impact on economic efficiency in either event. c. do become reflected in market prices, so they can be a source of economic inefficiency. d. are not reflected in market prices, so they do not adversely affect economic efficiency. e. are not reflected in market prices, so they can be a source of economic inefficiency.
