Use the following diagram of the streets in a residential neighborhood to answer the question. A neighborhood watchman patrols the neighborhood each evening. His patrol must cover each street in the neighborhood, beginning and ending at the marked starting point, P. Describe his "optimal route".

Question

A. the route that requires the least amount of walking, while still covering the whole neighborhood and returning to P.
B. the route that requires the least amount of walking, along which he is least likely to come across crime
C. the route along which he is least likely to come across crime
D. the route that require the least amount of walking, while still covering the whole neighborhood, but not necessarily returning to P
E. the route that requires the least amount of walking, by covering most streets in the neighborhood but not retracing any steps and returning to P

Answer 1

Answer: A