The answer is <em>C.It stated that the Pilgrims would rule themselves</em>. The Pilgrims landed in an unclaimed territory and had to decide how their government was going to work. They agreed that they would rule themselves.
It was so the delegates would be free to say what was on their minds. If anything about what they said would go to the public, there would be people who would be mad at them and thus possibly hurt them. It was to protect them.