Which two authors & their books changed living and working conditions for the lower class?
a) Florence Kelley’s “Save the Children from Sweatshops” & Thomas Nast’s “Corruption of Tweed and Tammany Hall”
b) Upton Sinclair’s, “The Jungle” & Jacob Riis’, “How the Other Half Lives”
c) Ida B. Wells’ “Stop Lynching” & Jane Addams’ “Hull House”
d) Clara Lemlich’s “Working Women’s Rights” & Andrew Carnegie’s “Captain of Industry”

B

Explanation:

Upton Sinclair's "The Jungle" talks about the harsh conditions of immigrant lives, who usually lived in poverty.

Jacob Riis' "How the Other Half Lives" discusses the squalid conditions of the NYC slums.

Together, these two books shed light on the terrible conditions the lower class lived in and brought about a call for change.

In the other choices, there is at least one book that does not pertain to living and working conditions for the lower class:

A) Thomas Nast's "Corruption of Tweed and Tammany Hall" discusses the political machines that corrupted society at the time.

C) Ida B. Wells' "Stop Lynching" depicted the horrifying practice of lynching African Americans.

D) Clara Lemlich's "Working Women's Rights" talked about women's rights.

Thus, B is the correct answer.