Economic scenario analysis with behavioral economic model and rational choice theory, then based on the analysis think about the best policy to solve the issue that you are describing. You will need to make a policy recommendation based on the economic model/ theory.
All applicants go through a series of tests that check their level of English and knowledge of formatting styles. The applicant is also required to present a sample of writing to the Evaluation Department. If you wish to find out more about the procedure, check out the whole process.