I oppose Kaepernick's actions because he could do so many other beneficial things besides just sit down. He could donate to a multitude of organizations, etc. However, I support his cause.
"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".
B. Is probably the answer
example, Mary, a farmer child, walked up to me.
Answer: The state of being