Inwardly free
hope that helps
I would say B) and D) apply to some of the differences between a Prime Minister and a President and also A). In addition, a Prime Minister is head of the government but may not be head of the state which may be a President in the same country or perhaps a Governor General.
It was an agreement with the states and was the first constitution of the United States of America.
D. Entitlements are benefits that Congress has provided by law to individuals.