Which is the odd one out out of Madagascar Guadeloupe nouvelle-caledonie nouvelle-zelande?

The odd one out is Guadeloupe, as it is a region of France and an overseas department, while Madagascar, New Caledonia, and New Zealand are all distinct island nations. Madagascar is located off the southeast coast of Africa, New Caledonia is a territory in the South Pacific, and New Zealand is an independent country in the southwestern Pacific.