The correct answer is D. NATO.
SAARC is the South Asian Association for Regional Cooperation. It is a regional intergovernmental organization that aims to promote economic, social, cultural, technical, and scientific cooperation among its member states. India is a founding member of SAARC.
BRICS is the acronym for Brazil, Russia, India, China, and South Africa. It is a group of five major emerging economies that have been described as the “new great powers”. India is a founding member of BRICS.
BIMSTEC is the Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation. It is a regional intergovernmental organization that aims to promote economic, social, cultural, technical, and scientific cooperation among its member states. India is a founding member of BIMSTEC.
NATO is the North Atlantic Treaty Organization. It is an intergovernmental military alliance between 30 North American and European countries. NATO’s headquarters are located in Haren, Brussels, Belgium. India is not a member of NATO.