The correct answer is option 1, Madagascar. The Indian Ocean Island Games is a multi-sport event held every four years among the islands of the Indian Ocean. The event was initially awarded to the Maldives to host in 2023. However, due to the Maldives requesting a change of dates for the event, the International Committee of the Indian Ocean Island Games (CIJOF) decided to move the hosting rights from the Maldives to another country.

Option 1, Madagascar, is the correct answer because it is the country that has replaced the Maldives to host the 2023 Indian Ocean Island Games. Madagascar, officially known as the Republic of Madagascar, is an island country located in the Indian Ocean off the southeastern coast of Africa. It is the fourth-largest island in the world and is known for its unique biodiversity. The decision to award the hosting rights to Madagascar was made by the CIJOF as a replacement for the Maldives.