Its a simile that this person is trying to explain to the reader, the person who wrote this referring to the fact that the guns looked like a small creature, this states that the fact that the guns looked like tiny insects, the reader has to read on to find out what the author is trying to explain to the reader.
You need to read on or if no more text to read, all you can say is that the author says that machine guns looks like tiny insects from their perspective.
Hope this helps!
Answer: Allied bombing raids destroyed many German jets while the jets were still on the ground.
Number 3 would be the only logical choice in my opinion because everything else would be in a narrative or story of some sort. Expository essays are exclusively informational.
