None of the listed individuals have served as UN Secretary-General. Shashi Tharoor was UN Under-Secretary-General, Hugo Chavez was Venezuela's president, Raul Castro is Cuba's former leader, and Haruhiko Kuroda was Asian Development Bank president. The correct answer would be Ban Ki-moon (2007-2016) or Kofi Annan (1997-2006) depending on when this question was written.