Which one of the following islands is the largest?

Based on global geographical data, the ranking of the world's largest islands after Greenland is New Guinea, followed by Borneo, Madagascar, and Baffin Island. New Guinea is the second-largest island in the world, covering approximately 785,753 to 786,000 km". Borneo ranks third globally with an area of about 748,168 km". Madagascar is the fourth-largest island, spanning roughly 587,041 to 587,295 km". Sumatra is the sixth-largest island in the world and the largest island located entirely within Indonesia, with an area of approximately 443,066 to 473,481 km". Among the options provided, New Guinea is the largest, followed by Borneo, Madagascar, and Sumatra. New Guinea is shared between Indonesia and Papua New Guinea, while Borneo is shared by Indonesia, Malaysia, and Brunei.