Which of the following sentences from the excerpt bes' supports Washington's belief that national unity is of the highest importance? A. "But as it is easy to foresee that, from different causes and from different quarters, much pains will be taken, many artifices employed to weaken in your minds the conviction of this truth;" B. "Citizens, by birth or choice, of a common country.that country has a right to concentrate your affections." C. "...it is of infinite moment that you should properly estimate the immense value of your national union to your collective and individual happiness; that you should cherish a cordial., habitual, and immovable attachment to it;" D. "...I am influenced by no diminution of zeal for your future interest, no deficiency of grateful respect for your