Answer:
b. Detroit
c. Los Angeles
Step-by-step explanation:
As you can see in the table, all the cities grew somthing, but the question is which cities grew because of the Great Migration in the 1920´s, you can see that Detroit and Los Angeles grew more in the 1920-1930 than the normal growth they showed in the 1910-1920 decade, this was because of the Great Migration, all the other cities grew in porportional rates.