Correct Answer:
Option B - Danube River Passes through maximum number of countries. It passes through 10 countries of Europe (Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova and Ukraine). It is the second longest river of Europe. It drains into Black sea.
B. Danube River Passes through maximum number of countries. It passes through 10 countries of Europe (Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova and Ukraine). It is the second longest river of Europe. It drains into Black sea.