Explanation:

• The Colombo Security Conclave, a grouping of India, Sri Lanka, the Maldives and Mauritius, on Thursday adopted a road map for cooperation and collaboration in areas such as maritime security, counterterrorism and drug trafficking. India, the Maldives and Sri Lanka are the founding members o WS of the Colombo Security Conclave. Mauritius was included as a new member of the conclave during the meeting, which was also attended by activate winpows. Rangladesh and Seychelles as observers. Hence option 4th is correct.