what is one reason that Thomas Paine brings up the opposing argument that the colonies have been well protected by the Bristiah

To create a chance to prove his opponents wrong

Explanation:

Thomas Paine's "Common Sense" brings a series of arguments to Americans to break loose from the British rule and be independent. To do so Paine used a common language so all Americans that wanted to read it would understand his language. He listed a series of reasons why the American Colonies were not well protected and well cared for by the British.

To create a chance to prove his opponents wrong.