Sergei Bubkha, an athlete of international repute, belongs to which of the following countries ?

Sergei Bubka, an athlete of international repute, belongs to Ukraine. He was born in Lviv, Ukraine, on December 4, 1963. He is a former pole vaulter who set 35 world records during his career. He is the only pole vaulter to have cleared 6 meters, and he is the only athlete to have won six consecutive world championships in the same event. He was inducted into the International Association of Athletics Federations (IAAF) Hall of Fame in 2011.

The other options are incorrect. The United States of America (U.S.A.) is a country in North America. Brazil is a country in South America. Russia is a country in Eastern Europe and Northern Asia. Ukraine is a country in Eastern Europe.