This literary term is called an "epiphany". They are quite common and have been occurring in literature as far back as ancient Greece. A writer famous for his characters' epiphanies is James Joyce for example.
One reason that Thomas Paine thinks the colonies stand a good chance against the British is that the colonies have the resources to build a great navy. Option B.
The colonies have the resources to create weapons easily.
Thomas Paine was an English-born American political activist, philosopher, political theorist, and revolutionary known as one of the Founding Fathers of the United States who inspired the patriots in 1776 to declare independence from Britain.