Please explain.

Please choose one (1) of the journal articles: Muralidharan, K. and V. Sundararaman (2015): "The Aggregate Effect of School Choice: Evidence from a two-stage experiment in India," The Quarterly Journal of Economics, 130, 1011-1066. Dante Contreras and Tomas Rau. "Tournament Incentives for Teachers: Evidence from a Scaled-Up Intervention in Chile." Economic Development and Cultural Change Vol. 61, No. 1 (October 2012), - pp. 219-246. Daley, Angela. 2017. "Income and the mental health of Canadian mothers: Evidence from the Universal Child Care Benefit." SSM - Population Health, Volume 3, 2017, Pages 674-683. https://doi.org/10.1016/j.ssmph.2017.08.002.Question 3 (50 points total) Please answer the following questions for 1 of the 3 journal articles listed below. Each question is 10 points. Please provide brief but complete answers. 1. Why should we be interested in the research question raised by the paper? 2. Describe the policy/program implemented and the intended (theoretical) effect. 3. What are the challenges encountered when evaluating this type of policy/program? .4. How do the author(s) address these challenges? 5. What are the main findings of the paper? Please choose one (1) off the journal articles: Muralidharan, K. and V. Sundararaman (2015): "The Aggregate Effect of School Choice: Evidence from a two-stage experiment in India," The Quarterly Journal of Economics, 130, 1011-1066. Dante Contreras and Tomas Rau. "Tournament Incentives for Teachers: Evidence from a Scaled-Up Intervention in Chile." Economic Development and Cultural Change Vol. 61, No. 1 (October 2012), pp. 219-246. Daley, Angela. 2017. "Income and the mental health of Canadian mothers: Evidence from the Universal Child Care Benefit." SSM - Population Health, Volume 3, 2017, Pages 674-683