Explanation:

- The Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC) is a regional organization comprising countries around the Bay of Bengal.

- Ministerial meetings are held to discuss various sectors for cooperation among member countries.

- New Delhi: Capital city of India, often hosts international meetings due to its status as a central political hub.

- Kathmandu: Capital of Nepal, known for hosting several regional meetings due to its strategic location.

- Bangkok: Capital of Thailand, a frequent host for regional forums and meetings.

- Chennai: Major city in India, known for industrial and economic activities but less commonly chosen for diplomatic meetings.

Correct answer:

- Kathmandu