D. That the 13 Colonies must declare its independence from Great Britain.
Explanation:
The "Common Sense" pamphlet produced by Thomas Paine laid down a few key points, in that the US had many grievances, which not only the British Royal Government fail to address, but it also added more on top of it. The Common Sense Pamphlet allowed for the common American to understand the necessity for Independence, and to rile support for the cause.
