The treatment of Christian Armenians in

Ottoman Turkey (1915) and the treatment of

Bosnian Muslims in the former Yugoslavia (1990s)

are examples of

(1) international relief efforts

(2) human rights violations

(3) expansion of voting rights

(4) government protection of minorities

The treatment of Christian Armenians in Ottoman Turkey (1915) and the treatment of Bosnian Muslims in the former Yugoslavia (1990s) are examples of Human rights violations.

(2) human rights violations.

Both of those are examples of ethnic cleansing and genocide, where the majority attempted to wipe out the minority. This is definitely a human rights violation and it didn't have anything to do with voting, the government didn't protect them and there was little relief provided. Therefore 2 is the correct answer.