It allows the reader to know what you will be writing about. If the hook is decent it will grab their attention and make the what to read about your essay.
Postmodern society a society occurring after the modern society. It can mean as a new practice that replaces or reorganizes concepts dealt with by modernism or an extension of the modern - same concepts but more validated techniques. It is also the age of capitalism in a global marketplace.
Tone is the mood or attitude conveyed. Word choice, and sentence structure all contribute to tone.
I think it is objective tone because it can be C. and A. because subjunctive is based on your feelings and chronigical order is not even Making sense and compare and contrast is the simlarities and differences of Living being