Many countries in the world have democratic governments. These governments often have a constitution. Which of the best following describes the purpose of a constitution?
A.
Constitutions are voted on by the people and can be changed at any time.
B.
Constitutions put limits on government power and protect citizens.
C.
Constitutions state that the citizens cannot rebel against the government.
D.
Constitutions place governmental power in the hands of one person.