Answer:(c)
The statement that best reflects the chief purpose of the 'Constitution' of a country is (c) It defines and limits the powers of government.
The Constitution of a country serves as a fundamental legal document that establishes the framework for governance and outlines the structure and functions of the government. One of its primary purposes is to define and limit the powers of the government, ensuring that it operates within specified boundaries and prevents the abuse of power.
While the other options mentioned are important aspects related to the Constitution, such as creating political offices and government (b), determining the objective for making necessary laws (a), and securing social justice, social equality, and social security (d), they are secondary to the primary purpose of defining and limiting the powers of the government. The Constitution acts as a safeguard to protect the rights and liberties of individuals and establish a system of checks and balances to ensure the government functions in accordance with the rule of law.