Q: What is a key factor in the growth of populations?


Read this paragraph and choose the correct option from the provided answers:

Moving into an area, or immigration, is a key factor in the growth of populations. Shown above is actual vintage luggage left by some of the millions of immigrants who came through Ellis Island and into the United States.

 Choices:

- legislation

- gentrification

- assimilation

- immigration


A:
immigration