IMPORTANT: If youre going to write please make sure your writing is neat and easy to read. Please write in print (not cursive). Thank you

QUESTION: Lets say a school starts requiring students to wear school uniforms starting on Feb 23 one school year. Assume you have data from several schools on end of year test scores (taken only at the end of the year) and absences by day. The data also include some schools where they did not implement school uniforms. Which of the following is a reasonable strategy/the best strategy to assess the impact on student, end of school test scores: Propensity Score matching, regression discontinuity, instrumental variables, difference in differences? Among those four options whats another (different) strategy for assessing the impact on student absences? Explain.