Which research question would be most appropriate for a four- to five-page research paper?

how successful have school uniforms been for schools in the united states?
does the use of school uniforms decrease violence in schools?
what style of school uniforms is most effective?
what percentage of schools have dropped mandatory school uniforms?

Need some on this. which answer is it?

Han put the last box into the back of his car and turned to look up at his dorm room. he saw himself through the window, laughing with his roommates and sharing his hopes and dreams. he saw all of the hours spent studying and the celebrations at the end of each semester. he smiled fondly as he turned away, got into his car, and drove off. which literary element does the passage contain?

Which situation from a novel best reflects the following theme? prejudice can be found in unexpected places and is always hurtful to those exposed to it. a. community members admire a public figure until a child exposes him as a fraud b. witnesses to a violent attack remain quiet for fear of endangering their families o c. a talented doctor cannot get work in a neytown because he is an "outsider." d. a couple tries to keep their romance alive across a great distance but fails.