The correct answer is A) they had increased political power.
The increase in the population of the Hispanic Community has affected their civil rights in that they had increased political power.
Hispanic people numbers in the United States have increased considerably in the last decades. They represent the minority with more presence in the United States after African Americans. The Laino influence in many spheres of the United States is notorious and they represent a considerable strength regarding possible voters in elections. They already have more representation in Congress. Indeed, recently there has been Hispanic candidates that aspire for the denomination of the Democratic and Republican Party, respectively.
The other options of the question were b) their civil rights were more limited because of increased poverty, c) they had less political power because people were more aware of them, and d) there was no effect on their civil rights.