Concept:WAFU means West African Football Union, which is a regional body that organises football competitions among West African countries.
Explanation:WAFU focuses on sports, especially football.
Football brings together players and supporters from different member states.
Through tournaments and exchanges, people share culture, values, and friendship.
This strengthens social bonds across the region.
Such sporting activities support ECOWAS in achieving its objective of cultural integration.
It is not related to language, currency, or free movement.
Answer:D. cultural integration