What did Roger Willams start preaching that finally made the officers of the colony decide to ship him back to England?

A) That the king had no right to give away the Indians' land, since the land did not belong to him.

B) That forcing people to believe in a certain way was wrong.

C) That church members should pay their own church bills, not tax money.

The answer is (B) That forcing people to believe in a certain way was wrong.

Explanation:

Roger Williams is a Puritan theologian, author, and minister who was also known as the founder of the Rhode Island state. One of his most important contributions is the idea of separation between church and state, which he expresses in detail in his publication, The Bloudy Tenent of Persecution for Cause of Conscience, which was thought to have influenced the tenets of America's Founding Fathers.

Option (C) is incorrect because though Robert Williams was against the use of taxpayer money for church purposes, this belief of his did not cause him to be exiled.

Option (A) is incorrect, because while Robert Williams did publicly criticize the King through a tract for selling Native American, and he was trialed for it - he wasn't convicted.

Option (B) is correct because he was charged with heresy and sedition by the court next year after the previous trial, due to his preaching of ideas being deemed as dangerous; ideas as exemplified in option (B).