<span>The introduction of new power sources</span>
Answer: Child labor was excruciatingly cruel and dangerous to the children of the Industrial Revolution.
Explanation: They worked in harmful conditions and wore baggy clothes. They worked long, unhealthy hours, whether they were sick or healthy. The got paid minimum wage, which was extremely low, and not enough to live off of.
The correct answer is <span>b. Works Progress Administration
This administration was the largest New Deal agency that employed millions of unemployed people, including all those that you mentioned in your question.</span>
