Final answer:
The statement about William of Orange is true as he was in the line for the English throne. Carolina's policy of religious toleration attracting colonists is also true. The claim that Antifederalists were Federalists during ratification debates is false.
Step-by-step explanation:
The statement "Although William of Orange was married to James II's daughter, Mary, he also was in line for the throne of England" is True. William of Orange, who became William III of England, and his wife Mary II jointly reigned over England, Scotland, and Ireland following the Glorious Revolution of 1688, which deposed her father James II. William was in line for the throne not only through marriage but also through his ancestry as he was a grandchild of Charles I.
Carolina's policy of religious toleration did indeed help attract new colonists looking for a place where they could practice their religion freely. Therefore, the statement "Carolina's policy of religious toleration helped to attract new colonists." is also True.
The statement that during the ratification debates, the Antifederalists were Federalists is False. The Antifederalists were opponents of the 1787 Constitution, which they believed concentrated too much power in the national government at the expense of states' rights, unlike the Federalists who supported a stronger central government.