Concept:Mali is a landlocked country, so its foreign trade depends on a neighbouring coastal port for sea access.
Explanation:Mali has no coastline, so exports must pass through another West African country.
Abidjan, in Côte d’Ivoire, has been Mali's most important external trading outlet.
Mali is connected to Abidjan by road and rail, making it a major route for exports.
Although Dakar also serves Mali, Abidjan handles a very large share of Malian cargo.
Because of this close transport link and historical trade pattern, Malian exports are most likely to leave through Abidjan.
Answer:D. Abidjan.