The correct option is D Taiwan
The Association of Southeast Asian Nations, or ASEAN, was established on 8 August 1967 in Bangkok, Thailand, with the signing of the ASEAN Declaration (Bangkok Declaration) by the Founding Fathers of ASEAN, namely Indonesia, Malaysia, Philippines, Singapore, and Thailand. It is a regional intergovernmental organization comprising ten Southeast Asian countries - Indonesia, Cambodia, Myanmar (Burma), Thailand, Vietnam, Laos, Brunei, Malaysia, Singapore, Philippines.