Detailed Solution:

The correct answer is “Promotion of international peace”.

Article 39: To secure

(a) the right to adequate means of livelihood for all citizens;
(b) the equitable distribution of material resources of the community for the common good;
(c) prevention of concentration of wealth and means of production;
(d) equal pay for equal work for men and women;
(e) preservation of the health and strength of workers and children against forcible abuse; and
(f) opportunities for healthy development of children.