The best description of Thomas Paine's tone in "The Crisis, No.1" is C. inspirational.
By using various tools of word usage and sentence construction, Paine was able to convey his message to the majority of American population. His work was written in such a way that even a lay person is persuaded to side with his views and ideas.
His persuasive tone emotionally touched the majority of the people which inspired them to revolt against Britain.