The correct option is "None" because none of the water bodies listed lie on or intersect the equator. Lake Tanganyika is located in East Africa, but it lies just south of the equator, while Lake Tonlé Sap is situated in Cambodia, north of the equator, and Patos Lagoon is located in Brazil, south of the equator. Understanding geographic coordinates and the location of major water bodies is essential for examining global patterns in climate, ecosystems, and human activities, all topics relevant to the UPSC syllabus for Geography.