2. [30 min] Since this is an empirical project, it is useful to start thinking about the data that would allow us to analyze the relationship between mobility constraints and pay inequality. a) How to measure mobility andlcr mobility constraints in the data? Please list 3 variables that in your opinion would capture mobility constraints. For each variable state how it is ccnelated with wages positively or negatively. b) Some publicly available micro datasets have cross-sectional information about income and employment while others have longitudinal information (meaning that the same person is surveyed at multiple points in time). What kind of dataset cross-section or longitudinal is better suited for study of mobility and income inequality? c) A table at msllibguides.princetonedullncomeSurve provides information about three micro d (CPS, SIPP. and PSID). Which one in your opinion is most suitable for analysis for causal relations between job mobility and pay inequality? Briey explain your choice