The author used fragments, and long sentences with a variety of length and beginnings. He used such methods to create sentence fluency and rhythm in the passage through making the reader pause or 'rest' in between sentences - making emphasis on some lines and deeming it nice to listen to.
The answer is:
a. Jack Kerouac
The Continental Army had a realistic chance of winning against the British.
Studies show that damage to one’s body due to smoking is not permanent if the smoker stops soon enough