In Santiago de Cuba, Cuba.
Answer:
From his involvement in the Montgomery bus boycott in 1955 until his untimely death in 1968, King's message of change through peaceful means added to the movement's numbers and gave it its moral strength. The legacy of Martin Luther King Jr. is embodied in these two simple words: equality and nonviolence.
I would think B
I would get a second source on this though
The answer to your question is:
C. Were dirty, crowded, and unhealthy.