Concept: The North Atlantic sea route links West African ports, especially Lagos, with European ports.Explanation: The North Atlantic route is used for trade between Nigeria and Europe. The main seaports on this route include Lagos-Antwerp in Belgium, Lagos-Rotterdam in the Netherlands, and Lagos-Southampton in Britain. Lagos-Montreal is not on the North Atlantic route because Montreal is in Canada, North America. Trade between Nigeria and North America uses the South Atlantic route, not the North Atlantic route.Answer: B. Lagos-Montreal