Answer:
Child Labour is the correct answer.
Step-by-step explanation:
Florence Kelly was American social reformer who coined the term wage abolitionism. She worked for minimum wage, children's rights and eight hour workdays. she was the first general secretory of National consumers League and also helped to create the National Association for the Advancement of Colored People.
Kelly was a member of intercollegiate Socialist society and worked for the African american civil rights and women suffrage and was a follower of Karl Marx and Friedrich Engels. She surveyed the working condition in the local factories in Illinois and found three or four year children working in sweatshops and presented the report to the Illinois state legislature. It led to prohibition on the working of children below the age of fourteen.