Correct option is D
Correct Answer: (d) Vienna
Explanation:
The International Atomic Energy Agency (IAEA) is headquartered in Vienna, Austria.
It was established in 1957 as an autonomous organization within the United Nations system to promote peaceful use of nuclear energy and to prevent its use for military purposes.
Information Booster:
The IAEA works with its Member States and multiple partners worldwide to promote safe, secure, and peaceful nuclear technologies.
It also plays a crucial role in nuclear inspections and safeguards, especially under the Non-Proliferation Treaty (NPT).
Additional Information:
(a) New York
Headquarters of the United Nations, but not of IAEA.
(b) London
Not a headquarters for any major UN nuclear-related agency.
(c) Paris
Headquarters of UNESCO, not IAEA.