1- The correct answer is D. This phrase of the Mayflower Compact helped American Colonists to understand the idea of social contract, since a pact is established that tends to the general good of the Colony to which all the members should abide. That is, a social pact is signed to achieve good and general justice.
2- The correct answer is D, it reassures colonial farmers that they can earn a profit from their goods without Great Britain's help. The essay affirmed that the American colonies did not obtain any compensation from Great Britain, whose sole purpose was to exploit their riches, and that any sensible analysis would conclude with the need to obtain the independence of British rule and establish a republican government of their own.
3- The correct answer is A. As the Magna Carta limited King's power, Blackstone's concerns about a wrong use of monarchy power were addressed in it.
4- The correct answer is D. The English Bill of Rights is the best example of how to limit monarchy's power through Parliament's decissions.