Which is the best example of the process through which public policy is made?

1) health officials identify that a public hospital is too busy and give the health department money to hire more doctors.

2) educators identify that a school that needs replaced and give the school department money to construct a new building.

3) interest groups identify a rise in childhood obesity and give educators money to add physical activity in public schools.

4) politicians identify an increase in accidents and give police departments money to enforce new speed limits on highways.