it means the main person in the story who speaks the most so like in harry potter, harry is the main character. Hope this helps.
Answer:
I believe that is a metaphor. If not my bad. Hope this is the right answer.
Your family is a dependent clause as well as Venice. :)
If you read a lot of books they typically have a main character that has a struggle and finds a way to deal with it, this includes Harry Potter, Goosebumps, and even Shakespeare, so my answer is d
