Certainly! Here are the reasons for the correct match between List-I (City) and List-II (River):

A. Washington DC - River Potomac:

Washington DC, the capital of the United States, is located along the banks of the Potomac River. The Potomac River flows through the eastern United States and is a major waterway in the region.

B. Berlin - River Spree:

Berlin, the capital of Germany, is crossed by the River Spree. The River Spree runs through Berlin and is an iconic waterway in the city, with many notable landmarks located along its banks.

C. Paris - River Seine:

Paris, the capital of France, is situated on the banks of the River Seine. The River Seine flows through the heart of Paris and is closely associated with the city`s landmarks, such as the Eiffel Tower and Notre-Dame Cathedral.

D. Madrid - River Manzanares:

Madrid, the capital of Spain, is connected to the River Manzanares. The River Manzanares passes through Madrid and is an essential feature of the city`s landscape.

Therefore, the correct match is:

A-4, B-3, C-2, D-1