Explanation:

protects the Directive Principles of StatePolicy

The judicial functions of the Supreme Court are the original as well as appellate of nature. Functions of the Supreme court
(1) to resolve the dispute(between center-state, two or more states)
(2) To protect the fundamental rights of the people
(3) To interpret the constitution

Directive Principles of State Policy - These principles are contained in part IV of the Indian constitution under article 36-51. These are non-justiciable which means they are not enforceable in the court of law. It is the moral duty of a state to implement these principles. If any state does not implement these principles, this can not be questioned in any court