Who was instrumental in leading the movement for child labor reform?
lewis hine
william wilberforce
parliament
congress

Lewis Hine was an American photojournalist who used his camera as a tool for social reform.

He was an instrumental reason of the movement for child labor reform by using his photographs.

Explanation:

Option: Lewis Hine

Explanation:

Lewis Hine was an American photographer and a sociologist who used his camera as an instrument to reform, especially in children condition. His pictures of children as workers led a change in America to improve the condition, particularly in the mills, mines and factories. Hine traveled to the east of the United States, gathering shocking images of exploited children and the slums in which they lived, which ushered the federal government to regulations on workplace conditions.

the answer should be monarchy