Answer with proper explanation otherwise I'll downvote

in 54 Which of the following government activities is a regulatory function? Select one: O a. maintenance of roads and highways O b, provision of social services O c administration of grants O d. prevention of unsafe work places 55 Firms could be held liable if their share prices fell significantly when the firms' projections of future earnings had been favourable, under the theory of Select one: O a. the common factor O b: fraud on the market O c. fraud on the nonmarket O d. insider trading