Answer:
It changes it to a " sBooks"
Explanation:
C. How are Bob and Derek getting there? Are they taking the car or the train?
This is the only sentence that is grammatically correct.
Thesis definition: a statement or theory that is put forward as a premise to be maintained or proved
So,
Without having a recognizable thesis, your reader will not fully understand what point you are trying to get across. Furthermore, your writing will seem to have no meaning or purpose, and will not inform the reader. To clarify, if you do not have a recognizable thesis, your writing would be pointless.
Introduced is a regular verb because all you did was add -ed at the end. Good luck!