The answer is "to provide better housing and jobs for Mexican Americans." And "to provide better medical care for Mexican Americans."
This is because they worked hard to help in social and financial aspects for the Mexican Americans.
The main reason why the Reapportionment Act of 1929 was passed was because Congressional redistricting had gotten out of control to the point where people were losing votes.
I’d say B, the goal of the Boxer Rebellion was to try to drive all foreigners out of China