It’s probably the first one hopefully you will get it
Answer: The author might be suggesting that the bacteria and diseases from the cesspool are leaking into their water source and into the shared water pump water, spreading the disease.
I am pretty sure it is act and scene
Answer:
Susan's horn is given to Caspian. As a relic of Old Narnia, the horn coming into Caspian's possession signals his acceptance of the older ways. When blown, it calls the Pevensie children to Caspian's aid, making it both practical and fabulous