What was the most significant social reform of the Progressive Era? Why?

formulating the initial idea for the policy

answer is c.

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

the correct answer is d- trough trades

i did a test and got it right

hope it ! : )