There needs to be a comma at A because it is an appositive phrase. Meaning he is describing someone or something and that is separate from the sentence its self
7.) Incorrect. (Philanthropy means the desire of supporting others, mostly financially.) And so the answer is A(Support of a charity)
8.) Incorrect. (Xenophobia is intense fear or paranoia of people from other countries.) So the answer would be C(Critic)
9.) Incorrect. ( Amity means a certain friendship) So the answer is D(appeasement).
Answer:
When the Romans left Britain