Which of these is an example of how the government regulates business in the mixed economy of the united states? a. the department of transportation builds a highway and approves all the work done on roadways. b. the federal bureau of investigation works with members of local police forces to solve crimes. c. the department of education sets educational standards for all schools in the country. d. the centers for disease control warn citizens of an outbreak of avian flu in their local area. e. the food and drug administration must approve a new drug before it can be sold to the public.