Answer C, Serbs, thanks to the Serbian Revolution (1804 to 1815)
It was in 1931 when Japan began its occupation in China outside of Manchuria. This was during the time that Japan considered Manchuria as a great source because of its natural resources. Japan thought that this would lead to a great industrial development and the chance to acquire great power.
Hypothesis. She is making a claim on what she will be able to do.