As the United States become more industial, what did many childern who lived in cities do?

O A. go to school
O B. work in factories
O C. Become apprentices
O. D. lead labor unions

hel11

b

Explanation:

in the late 1800s and the industrial revolution, children were used as labor in major factories to maintain workforce. Many factories performed unsafe working procedures and chemicals could contaminate the children.

rain should be the answer.