Ouagadougou is the capital city of Burkina Faso. This is a standard geographical knowledge question about francophone West Africa.
Burkina Faso is a landlocked country in West Africa, and Ouagadougou (sometimes informally called "Ouaga") has been its capital since independence in 1960 (when the country was still known as Upper Volta, renamed Burkina Faso in 1984).
The other options are cities in West Africa but not the capital of Burkina Faso:
Kolkoro - not a national capital (Kolokoro/Koulikoro is a town in Mali).
Abidjan - the economic capital of Cote d'Ivoire (its political capital is Yamoussoukro).
Bouake - the second-largest city in Cote d'Ivoire, not a national capital.
For JAMB French, it is important to know the capitals of major francophone African countries, particularly those in West Africa.