Option 1 -> Brunei is a founding member of ASEAN, having joined in 1984.
Option 2 -> Laos became a member of ASEAN in 1997.
Option 3 -> Vietnam joined ASEAN in 1995.
Option 4 -> India is not a member of ASEAN, though it maintains strategic partnerships and dialogue relations with the bloc.
Hence, Option 4: India -> ASEAN is an association of Southeast Asian nations, and India, being a South Asian country, is not a member. However, India has been a sectoral dialogue partner since 1992 and a summit-level partner since 2002 -> correct