The National Consumer's League is an American organization that advocates for consumers on marketplace and workplace issues. As on of the things they do is to promote safer and secure workspace, I think they might have been protesting about factory's clean workplace.
In general, organized labor was very successful in improving the position of workers in the period from 1875 to 1900 because of the formation of unions, which protected workers against dangerous working situations.
I dont know but if it helps there is some law encyclopedias you can read if you look up act 911 it should pop up
Answer:
They used terrace farming.
so it is b
Explanation: