(A) 2
(B) 4
(C) 6
(D) 8
🧠 Explanation:
- The Rhine River is one of Europe's major rivers and flows through **six countries**.
- These countries are: **Switzerland, Liechtenstein, Austria, Germany, France, and the Netherlands**.
- The river is vital for transport, trade, and tourism across these European nations.
- Since it flows through six countries, the correct answer is (C) 6.