Consider the following water bodies :

I. Lake Tanganyika
II. Lake Tonlé Sap
III. Patos Lagoon

Through how many of them does the equator pass?

(a) Only one
(b) Only two
(c) All the three
(d) None

The correct answer is (d) None.

Here is the geographical location of each water body relative to the equator:

Lake Tanganyika: This is one of the African Great Lakes. It is located entirely south of the equator (its northernmost point is around 3° S latitude). The African Great Lake that the equator does pass through is Lake Victoria.
Lake Tonlé Sap: This is a large freshwater lake in Cambodia. The entire country of Cambodia is in the Northern Hemisphere (roughly 10° N to 14° N latitude).
Patos Lagoon (Lagoa dos Patos): This is the largest coastal lagoon in Brazil. It is located in the southernmost Brazilian state of Rio Grande do Sul, entirely south of the equator (around 30° S latitude).

Therefore, the equator does not pass through any of the three listed water bodies.