Which country/region/island is claimed by China but operates as an independent country?
1. Mongolia
2. North Korea
3. South Korea
4. Taiwan

Taiwan

Explanation:

The Republic of China government received Taiwan in 1945 from Japan, then fled in 1949 to Taiwan with the aim to retake mainland China. ... In reality, the PRC rules only Mainland China and has no control of but claims Taiwan as part of its territory under its "One China Principle".

None   they are   equally likely to occur on any plate boundary

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