【单选题】Which one of the following statements is not the definition of a thesis?
A.
A thesis presents your position on a subject.
B.
A thesis focuses on an interesting and significant social topic, engages your energies and deserves your careful thought.
C.
A thesis is the essays’ hub—the central point around which all the other topic revolves.
D.
A thesis, especially when it occurs early in an essay, also helps focus the reader on the pieces’ central point and thus helps you achieve your writing purpose.