Final answer:
The National Child Labor Committee reported on child labor and unsafe working conditions, advocating for the passage of labor legislation. They used photographer Lewis Hine to document the plight of children working in factories.
Step-by-step explanation:
The National Child Labor Committee (NCLC) reported on the use of child labor and the unsafe conditions that children were required to work in. The NCLC was formed in 1904 and advocated for the passage of labor legislation to ban child labor in the industrial sector. They employed photographer Lewis Hine to document and raise awareness about the plight of children working in factories.