Although most citizens have access to police protection, they also take measures, such as putting locks on their doors, to protect themselves. we can explain this because police protection is a(n) good, while self-protection is a(n) good.

A public good simply is something to which everyone has access to under the condition that his consumption does not make it unavailable for others as opposed to a private good which is exclusive to the one who have paid for it.

answer; exaggerate what you believe is the deception and state it, hoping that the other will jump in to "correct" the statement;

answer; traffic,pedestrians,parked vehicles and intersections;