The Answer would be B i believe.
Thesis: a thesis is a short, usually one sentence statement that summarizes the main points of the piece <span />
There's m,any theories as to what the seven rooms symbolize but here are two popular ones. The rooms symbolize the seven stages of life from birth to death or that the rooms symbolize the seven levels of Hell. Take your pick, you can probably argue better for the first one, though. Each color has significance to the stage of life it represents, I can't remember all the different colors, but you get the idea.
Most memoirs and autobiographies end with a reflection, since it is at this time that the writer can reflect mostly on their work and life, but of course this is not mandatory.
