Tammy Hall is the mayor of a large U.S. city. She has just established the Office of Window Safety. Because windows sometimes break and spray glass shards, every window in the city will now have to pass an annual safety inspection. Property owners must pay the $5-per-window cost—and by the way, Tammy has made her nephew the new head of the Office of Window Safety. This new policy is an example of: 

a. Political corruption

b. Earmarks

c. Rent seeking

d. Adverse selection