The most likely reason why Thomas Paine published his American Crisis pamphlets under the name “Common Sense” is shown in the option : to remain anonymous in case of attacks from British sympathizers. He wrote his poem in very plain but persuasive language where you can see the ideas of advocating independence from Great Britain to those people in the Thirteen Colonies. As the American Revolution began, he wrote this prose where he raised a lot of political issued connected with Britain too, and wrote it anonymously due to understandable circumstances.