Correct option is A
The correct answer is (a) Sri Lanka.
BIMSTEC (Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation) is a regional organization comprising seven countries that lie in the Bay of Bengal region. Sri Lanka is one of its members.
Information Booster:
BIMSTEC Members: The full members of BIMSTEC are Bangladesh, Bhutan, India, Myanmar, Nepal, Sri Lanka, and Thailand. Vietnam, Laos, and Cambodia are not part of BIMSTEC.
Purpose: BIMSTEC was formed to enhance regional cooperation in sectors such as trade, technology, energy, transport, and the environment.
Significance: The organization's objective is to create a regional economic integration zone and promote mutual cooperation among the member countries to improve economic development.