Multiple choice Which of the following is the largest island in the world in a freshwater lake? Moncrieffe Island Greenland Manitoulin Island Dunglass Island Reveal answer Fill a bubble to check yourself C Correct answer Explanation Manitoulin Island in Lake Huron is the world's largest island located in a freshwater lake. It covers 2,766 km² and is part of Ontario, Canada. Greenland is the world's largest island overall but is in the ocean, not a freshwater lake.