The correct statement is that South Korea joined the Organisation for Economic Co-operation and Development (OECD) in 1996, becoming the second Asian country to do so after Japan, which had joined in 1964. This accession marked a significant milestone in South Korea's post-war economic transformation, symbolising international recognition of the country's rapid industrialisation and its emergence as a developed, market-oriented economy following decades of export-led growth centred on electronics, shipbuilding and automobiles. The OECD itself was founded in 1961, evolving from the earlier Organisation for European Economic Co-operation, which had coordinated the distribution of Marshall Plan aid in post-war Europe. Its founding members were almost entirely Western European and North American nations, meaning no Asian country, including Japan or South Korea, held founding-member status. This directly rules out the first distractor, which falsely claims South Korea was a founding member in 1961, an error that conflates the organisation's founding year with South Korea's much later accession. The second distractor, claiming South Korea has never joined the OECD, is factually false and easily eliminated once a student recalls that South Korea is regularly cited in current-affairs and economic-policy discussions as an active OECD member, participating in its economic surveys and policy reviews. The fourth distractor reverses the correct chronology, claiming South Korea joined before Japan; in reality Japan's 1964 accession preceded South Korea's by more than three decades, making Japan the first Asian OECD member and South Korea the second. A common exam confusion is assuming any organisation joined decades after founding must still count as "founding," or reversing entry order between closely related regional powers like Japan and South Korea without checking exact years.