The correct answer is D.
Living in apartheid-era South Africa lead Hilary Kromberg Inglis and her sibilings to become activist against apartheid.
In the story, she experienced first hand what apartheid laws could do to a family. Her uncle Michel had been baned from the country for speaking agains Apartheid when he was out of the country. And even when her granfather was dying, he was not allowed to enter South-Africa, not even to cross the glass of the airport, to say one final goodbay to his father.
Hilary realized then that apartheid was a war, because only wars could cause so much pain, and that created her desire to fight it, to seek for a word with equal human rights for everyone.