"of insects" is an adjective phrase because it's a prepositional phrase that acts as an adjective. It modifies the word "group"; In other words, "of insects" is used to describe the word "group".
I would say A, that seems like the best answer! :)
1. Imprecise. The chef will not know how long he has to cook.
2. Vagueness. We are not sure how many politician exactly.
3. Incomplete meaning. We just know tall students are allowed to play basketball, but there are no further explanations.
4. Vagueness. We are not sure how many lies do the Prime Minister say.
5. Lexical ambiguity. The word "suspects" have two meanings in this sentence. The first one is a person thought to be guilty of a crime or offence. The second is a person who commits robbery.
6. Syntactic abiguilty. We are not sure whether peter's wallet was stolen by General Office or was found by General Office.
7. I am not sure with this question.
8. Equivocation. Common has been used for two times but with different meanings.
9. I am not sure with this question.
10. Referential ambiguity. We are not sure which article exactly. They should provide the name of the article
Hope this help you
