Inherent is a word that comes from the Latin "inhaerens" and it is a conjugation of the verb "inhaerere" ("remain united"). The concept is used to name that which, due to its natural conditions, it is impossible to separate it from something since it is united in an indivisible way to that. Synonyms of the word include: essential, intrinsic, built-in, fundamental, innate. The answer is A. "Essential".
In short, Paine has an effective argument against the idea of reconciliation with Great Britain. This is obvious through the logical reasoning he uses, the quotes from previous events, and the continued reminding of unity against division.