Sarah and Alice live and work in different regions of the same country. Each is considering a move to the most economically-prosperous region of this country (referred to below as the "destination region").

Assume that Sarah and Alice are identical in every way except for the following differences:

• Sarah's home region is next to the destination region, while Alice's home region is roughly 2000 km away from the destination region
• Sarah's home region is culturally distinct from all other regions in the country
• Sarah is 25 years old, while Alice is 35
• The unemployment rate in Sarah's home region is 6.5%, whereas it is 8% in Alice's home region

a) Given this information, describe two reasons why we might expect Sarah to be more likely than Alice to migrate to the destination region.

b) Given this information, describe two reasons why we might expect Alice to be more likely than Sarah to migrate to the destination region.