Which one of the following (Lake – Country) is not correctly matched?

Option A is the incorrect match. Lake Onega is located in the northwestern part of European Russia (specifically in the Republic of Karelia, Leningrad Oblast, and Vologda Oblast), not Canada. It is the second-largest lake in Europe.

• Lake Baikal: Located in southern Siberia, Russia; it is the world's deepest and oldest freshwater lake.
• Lake Maracaibo: Located in Venezuela; it is a large brackish tidal bay or inlet of the Caribbean Sea, often considered the largest lake in South America.
• Lake Michigan: One of the five Great Lakes of North America, it is the only one situated entirely within the United States of America.