Final answer:
The questions pertain to historical facts about William of Orange and Sir Walter Raleigh. William of Orange's marriage to Mary, James II's daughter, and his subsequent succession to the English throne is true. Sir Walter Raleigh's involvement in the Roanoke Colony is also true.
Step-by-step explanation:
The original question regarding Jack being the leader of the choir boys and wanting to be in charge is a reference to a character from William Golding's novel Lord of the Flies. Without additional context, it's not possible to provide an accurate true or false response as the character of Jack does desire power, but he is not initially the elected leader—that is Ralph. Therefore, let's address the provided statements.
1) The statement about William of Orange being married to James II's daughter, Mary, and also being in line for the throne of England is true. William and Mary became co-monarchs of England following the Glorious Revolution in 1688.
2) The statement about Sir Walter Raleigh being behind the attempt to colonize Roanoke is also true. He was granted a charter by Queen Elizabeth I and organized an expedition that led to the settlement of Roanoke, which later became known as the 'Lost Colony'.