Here's an elaboration of the matching of continents (List I) with their corresponding sea ports (List II):

A. North America (Vancouver): Vancouver is a major seaport in North America, located on the west coast of Canada. It serves as a crucial gateway for trade between North America and countries in the Pacific Rim, including Asia.

B. South America (Rio De Janeiro): Rio de Janeiro is a prominent port city in Brazil and South America. It is known for its bustling port facilities and plays a significant role in facilitating trade and commerce in the region.

C. Europe (Hamburg): Hamburg is one of Europe's major sea ports, located in Germany. It is not only an important port for Germany but also for the entire European continent. Hamburg's port handles a substantial volume of cargo and is a key hub for trade within Europe and beyond.

D. Africa (Durban): Durban is a major seaport in South Africa and is situated on the eastern coast of the continent. It serves as a vital port for Southern Africa, facilitating trade with various countries in the region and internationally.

THEREFORE THE CORRECT OPTION IS [3].