Upton Sinclair’s novel The Jungle influenced public opinion to such an extent that a.
Roosevelt persuaded Congress to pass the Pure Food and Drug Act.
b.
many states passed minimum wage laws and maximum hour laws for women.
c.
state legislatures passed mine and factory safety laws and new inspection regulations.
d.
Wilson convinced Congress to pass the Keating-Owen Child Labor Act.

the answer is c     : )

explanation:

i don't have an explanation because i don't know, but i think the answer is c because i googled it and google is right : ) just kidding google isn't allways right but the answer is still c. i hope this !

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.