What is the purpose of the phrase "secure the blessing of liberty to ourselves and our posterity" in the preamble to the U. S. constitution O A. To state that the government is expected to protect American freedoms
O B. To guarantee that the U. S. government will have separation of powers
O C. To place strict limits on the power of the U. S. federal government
O D. To show that the people hold all political power in the country