This question asks which city is in Cote d'Ivoire (Ivory Coast). The correct answer is Yamoussoukro, which has been the official political and administrative capital of Cote d'Ivoire since 1983.
The other cities are capitals of different West African countries:
Cotonou is the economic capital of Benin (the official capital is Porto-Novo)
Lome is the capital of Togo
Dakar is the capital of Senegal
Knowing the capitals and major cities of Francophone African countries is essential for JAMB French. Cote d'Ivoire is a major Francophone West African nation, and Abidjan (its largest city and economic hub) is also important to know, though Yamoussoukro is the official capital.