The correct answer is C) The people who were given these colonies had full governing rights.
What was a unique feature of proprietary colonies was that the people who were given these colonies had full governing rights.
At the beginning of the colonization of North America, a proprietary colony was the one who granted pieces of land or territories to proprietors by the British monarchy and had full government rights. The examples are the colony of Carolina or Pennsylvania.
William Penn was the founder of the colony of Pennsylvania. King Charles II had a large loan with the father of William and after the father's death, he granted William a big portion of land in the American territory. William called Sylvania, Latin for "woods." Penn belonged to the Religious Society of Friends or the Quakers.