The central idea is the central, unifying element of the story, which ties together all of the other elements of fiction used by the author to tell the story. The central idea can be best described as the dominant impression or the universal, generic truth found in the story. Therefore that is why that is the central idea
A graph should be labeled as a Figure, not a Table. The title of the figure should include enough detail that the image could "stand-alone" without having to read too much of the paper
I think Ceasar did not read the letter from Artemidorus because he believed that personal matters (since the letter was adresssed to him) came after the important matters of State. He also thought Artemidorus to be 'mad'.
