challenge: What is the geographical area served by the Miami-Dade Public Library System?
  
  A. Only unincorporated areas of Miami-Dade County
  B. All of Miami-Dade County and surrounding counties
  C. Only the city of Miami
  D. Most of the geographical boundaries of Miami-Dade County, including most of its municipalities and all of unincorporated Miami-Dade County
  Answer: 