The correct options are
A It has provisions that give us our rights and duties.
B It contains a collection of rules and principles important for governing a nation.
C It gives the government powers and responsibilities.
The Constitution is superior to all the laws of the country. It contains a collection of rules and principles important for governing a nation. It has provisions that give us our rights and duties. It provides the government with powers and responsibilities, and it can be changed periodically as per people's aspirations, expectations and interests.