HELP ASAP WORTH 10 POINTS FIRST PERSON TO ANSWER CORRECTLY GETS BRAINLIEST Why did child labor become so widely used during the Progressive Era? Select three options.

A. Education was no longer valued by the working class.
B. Children needed to help bring in income for their families.
C. Business owners could pay children less money than adults.
D. Children in major cities were willing to work in factories for no pay.
E. Unskilled labor could be used to operate newly developed machinery.