Refer to the "The Mayflower Compact (1620) and the Winter of 1621" section from Of Plymouth Plantation According to Bradford, why was the Mayflower Compact written?

to establish the purpose for the colony and describe its governance

to create an alliance between the colonists and the ships' crew members

to declare the colonists' intent to separate from King James's rule

to set up a trade agreement between the colonists and the Virginia Company