Reread this passage from the secondary source "An Overview of the 19th Amendment".

While many women were able to head to the polls, the amendment did not give voting rights to all women. Women of color, immigrants, and lower income women were often deterred from voting by laws and social pressure. For example, Native American women were not considered U.S. citizens until 1924 and were not permitted to vote. Women who were convicted of a crime were also unable to vote, even if they completed their sentence.

Which research question is answered by this passage?

A. Who first proposed the idea of a voting rights amendment for women?
B. How did the 19th Amendment change the American political system?
C. Did the 19th Amendment make it possible for all woman in the U.S. to vote?
D. Which events had the greatest impact on women gaining the right to vote?