C. Felt that government was at odds with the concept of liberty.
Step-by-step explanation:
The phrase "secure the blessings of liberty to ourselves and our posterity" means that they wanted to make the people feel secure in their rights and freedom and realize that this cannot be taken away by the government. Previously before, the government of Great Britain completely used and gave no rights to the colonists, often having "taxation without representation", now with a new Constitution, citizens were scared too much power would go into the government's hands and a repeat of history would happen. Numerous phrases, this being just one, secure the people's freedom and liberty from the government.