Mary Brown's dog symbolizes the child in a way the police can get away with the killing even if the child or citizens are innocent.
The police showing no remorse about killing an innocent life of the dog/child demonstrates the corruption of the environment there.
My mother, she's always been there for me and she has given me the best advice. She prepared me for life and she still is.
Can you give the choices that its giving you since it says "which of the following words"?
What? Please explain so I can help you further.