Of the various agencies related to the United Nations, the one that has the longest period is

A. International Labour Organisation

B. Universal Postal Union

C. World Health Organisation

D. World Meteorological Organisation

Answer: Option B

Solution(By Examveda Team)

Of the various agencies related to the United Nations, the one that has the longest period is Universal Postal Union. The Universal Postal Union, established by the Treaty of Bern of 1874, is a specialized agency of the United Nations that coordinates postal policies among member nations, in addition to the worldwide postal system.