Final answer:
4) Lagos is the city that is farthest south among the options given, as it is located near the Gulf of Guinea on the Atlantic coast, south of the equator.
Step-by-step explanation:
To determine which city listed is farthest south, we can refer to their geographic locations in relation to the equator.
Kinshasa is the capital city of the Democratic Republic of the Congo and is located just south of the equator. Addis Ababa, the capital and largest city in Ethiopia, is situated north of the equator and serves as a hub for various international organizations. Oran is a coastal city in the northwest of Algeria and it is also located north of the equator. Lastly, Lagos is a major city in Nigeria and is positioned near the Gulf of Guinea on the Atlantic coast, south of the equator. By comparing their positions relative to the equator, we can conclude that ) Lagos is the furthest south among the cities listed.