Which Great Lake borders Michigan to the east?

Lake Huron borders Michigan to the east, making it the correct answer to the question. Michigan is uniquely positioned between four of the five Great Lakes, and Lake Huron specifically delineates the eastern edge of the Michigan mainland.

The portion of Lake Huron that borders Michigan is characterized by numerous islands, including the famous Mackinac Island, and features a varied coastline that is crucial to the state's geography and ecology. Additionally, the Straits of Mackinac, where Lake Huron meets Lake Michigan, are significant waterways that connect these two lakes.

Understanding the specific geographical boundaries of Michigan, including its adjacent bodies of water, is important for recognizing the state's natural resources, tourism, and regional development.