The correct answer is C) declare independence and establish a republic.
The radical colonists and radical writings such as Common Sense urged the colonists to declare independence and establish a republic.
Pamphlets such as "Common Sense," written by Thomas Pain at the end of 1775 and released at the beginning of 1776, urged colonists to support the demand for independence from the English Crown. Colonists were very angry about the heavy taxation imposed by the British government such as the Navigation Acts, the Sugar Act, the Stamp Act, or the Tea Act. And the colonists did not have a voice or representation in the British Parliament. That is why they supported the Revolutionary War and the independence of the 13 American Colonies.
