Final answer:
The subject of this question is Social Studies, specifically migration. Migration refers to the movement of people into and out of an area and can be voluntary or forced. It is driven by factors such as seeking better opportunities or resources.
Step-by-step explanation:
The subject of this question is Social Studies. Migration is the key concept related to this question. Migration refers to the movement of people into and out of an area. It can take the form of immigration, which is movement into an area to take up permanent residence, or emigration, which is movement out of an area to another place of permanent residence. Migration is driven by various factors such as seeking better opportunities or resources.