OE
The structure of this sentence demands a little extra attention. Those who do not “embrace the ... values of their homeland” do worse academically, so they will be the ones to pay the “price.” What comes at a price, then, is embracing the culture of the new home. “Acculturation” and “assimilation” both mean exactly this. The incorrect pair, “alienation” and “estrangement” (separation from a group), have the opposite meaning. “Indebtedness” does not fit this sentence, since there is no reason to believe that someone owes someone else. And “investiture,” which means the act or formal ceremony of conferring rank on a person, also does not fit in this sentence.
Answer: A,B