Relating these to Australian slang words, if "banger" relates to a sausage, then "cocky" would be short for a cockatoo. A cockatoo is a bird that is a native to Australia. Though "cocky" may also mean someone who is overconfident in a bossy way, seeing as how banger is used as a slang word, cocky as a cockatoo is more fitting.
Answer:
If the book is The Diary of Anne Frank, the answer is below :)
Explanation:
D.
This contributes to the fact that Anne has nightmares, and when screaming, she is putting everyone's lives in danger, because you never know when the Nazis might be searching the area.
Swimming in the lake Im not 100% on that so maybe wait until someone answers sorry hope its right
D I think tell me if I am wrong