Which of the following Articles of the Indian Constitution directs the State to ensure equal pay for equal work for both men and women?

The correct option is Article 39(d).

Explanation:
Article 39 of the Constitution of India falls under Part IV, which deals with the Directive Principles of State Policy (DPSP). Specifically, Article 39(d) directs the State to secure equal pay for equal work for both men and women. This principle aims to eliminate gender discrimination in wages and ensure economic justice in the workplace.

Overview of other mentioned Articles:
• Article 14: Guarantees equality before the law and equal protection of the laws within the territory of India.
• Article 15: Prohibits discrimination on grounds of religion, race, caste, sex, or place of birth.
• Article 42: Makes provision for securing just and humane conditions of work and for maternity relief.