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:
Sentence 3
Explanation:
While all of the other sentences explain how termites can be helpful, sentence 3 is unrelated as all it does is describe the size of the nest.