Which of the following questions requires investigation and leads to
debatable conclusions?
A. Which surfers did the most to popularize the use of the short board?
B. What was the official government explanation for U.S. involvement in Vietnam?
C. Do police bicycle and foot patrols help reduce neighborhood crime?
D. How does an electric lightbulb work?
You can look at the data for neighborhoods with and without to see if there is a difference. Most likely every neighborhood will not be impacted the same but you will see a trend. So it would be researchable and debatable.
