The Directive Principles of State Policy are guidelines or principles given to the government to be followed while formulating policies and making laws. They are not justiciable, meaning they are not enforceable by courts but are fundamental in the governance of the country.

Option 1: Uniform Civil Code for all citizens is a part of the Directive Principles of State Policy. It refers to the idea of having a common set of laws governing personal matters such as marriage, divorce, inheritance, and adoption, regardless of an individual`s religion or belief.

Option 2: Separation of Judiciary from Executive is also a part of the Directive Principles of State Policy. It emphasizes the need for an independent judiciary to ensure fairness and impartiality in the legal system.

Option 3: Duty of the State to raise the level of nutrition and standard of living is another example of a directive principle. It highlights the responsibility of the government to improve the quality of life for its citizens by addressing issues like poverty, malnutrition, and inadequate living conditions.

Option 4: The correct answer is option 4. Promotion of scientific temper, humanity and the spirit of inquiry and reform is not a part of the Directive Principles of State Policy. However, it is an important aspect of the Indian Constitution as it promotes a