A constitutional government by definition is a

The correct option is Limited government.

A constitutional government is one that is defined, structured, and limited by a constitution, which serves as the supreme law of the land. The primary purpose of a constitution in such a government is to establish the framework of the state, define the powers of different branches of government, and, most importantly, set clear boundaries on those powers to protect the rights of individuals.
By prescribing what the government can and cannot do, a constitution prevents arbitrary exercise of power and ensures that the authority of the state is not absolute. Therefore, by definition, a constitutional government is a limited government, as its power is restricted by law to safeguard citizens' liberties.