Which event did Bolt win at the 2005 CAC Championships? He won the 200 metres. The result came at the 2005 Central American and Caribbean Championships in Nassau, Bahamas, held from 8 to 11 July.
Bolt was only 18 and still developing from a celebrated junior into a senior international sprinter. His victory added an important regional title early in his career, before his Olympic breakthrough and the world records that later made him famous. The championships took place at Thomas Robinson Stadium and included athletes from across Central America and the Caribbean.
The event name can cause confusion because CAC stands for Central American and Caribbean, not a global championship. It is also easy to remember Bolt primarily for the 100 metres, although the 200 metres was his first signature event and remained one of his strongest races. He later became the first athlete to win four World Championship titles in the 200 metres.
The other options are not the Nassau title recorded for Bolt in 2005. His early regional breakthrough was specifically over one lap of the track's curved-and-straight sprint distance: 200 metres.