The correct answer is option 2: South Korea.
ASEAN, which stands for the Association of Southeast Asian Nations, is a regional intergovernmental organization in Southeast Asia. It was founded in 1967 with the primary goal of promoting economic growth, social progress, and cultural development among its member countries.
Option 1: Indonesia is a member of ASEAN. It is the largest country in Southeast Asia and plays a significant role in the regional organization.
Option 3: Thailand is also a member of ASEAN. It has been a member since 1967 and actively participates in various initiatives and programs.
Option 4: Vietnam is a member of ASEAN. It joined the organization in 1995 and has since benefited from regional cooperation and integration.
Alert - The correct answer should be 2: South Korea. South Korea is not a member of ASEAN. While it has close economic ties with the region and participates in various ASEAN-related forums, it is not a full member of the organization.