Explanation:

- Option 1: To ensure equality of treatment with respect to Political and Civil rights

- This is mostly addressed by Fundamental Rights, not Directive Principles.

- Option 2: To ensure delivery of Social and economic justice to the people

- The Directive Principles of State Policy aim to provide a framework for achieving social and economic justice, guiding the state in its responsibilities toward citizens.

- Option 3: To facilitate effective control of state over resources of the country

- This doesn't directly align with the essence of Directive Principles, though some principles suggest state involvement in managing resources.

- Option 4: To facilitate Liberal Economy in the country

- This isn't the primary aim of Directive Principles, which focus more on welfare and equitable distribution than on economic liberalization.