Correct Option: C. Abidjan and Kaduna Detailed Explanation: To determine why option C is the correct answer, we need to analyze the geographical locations of the cities mentioned in the options and understand their relative positions on a map of West Africa.

1. Understanding the Cities:
2. Abidjan: This is a major city in Côte d'Ivoire (Ivory Coast), located on the southern coast of the country along the Gulf of Guinea.
3. Kaduna: This city is located in Nigeria, in the northern part of the country. It is an important urban center and serves as a hub for transportation and trade.
4. Geographical Positioning:
5. When we look at a map of West Africa, we can see that Abidjan is situated to the southwest, while Kaduna is located further north and slightly to the east of Abidjan. The line connecting these two cities would generally run in a northeast direction from Abidjan to Kaduna.
6. Analyzing Other Options:
7. Option A: Abidjan and Kano: Kano is another city in Nigeria, located in the northern part of the country, but it is further east than Kaduna. A line connecting Abidjan to Kano would not be as direct as the line to Kaduna, making this option less likely to be correct.
8. Option B: Freetown and Kaduna: Freetown is the capital of Sierra Leone, located on the coast. It is situated to the southwest of Kaduna. A line connecting Freetown to Kaduna would have to travel northeast, but it would not connect through the same direct path as Abidjan to Kaduna.
9. Option D: Lome and Jos: Lome is the capital of Togo, located to the southeast of Abidjan. Jos is in Nigeria, but the line connecting Lome to Jos would not intersect with the line from Abidjan to Kaduna, making this option incorrect.
10. Conclusion:
11. The line marked N connects Abidjan and Kaduna because it represents a direct route from the coastal city of Abidjan in Côte d'Ivoire to the inland city of Kaduna in Nigeria. This connection is more straightforward compared to the other options, which involve cities that are either too far apart or not aligned in a way that would create a direct line.

Revision Summary:

• Abidjan is located in Côte d'Ivoire, while Kaduna is in Nigeria.
• The line connecting these two cities runs in a northeast direction, making option C the correct choice.
• Other options involve cities that are either too far apart or not aligned correctly to form a direct line.
• Understanding the geographical layout of West Africa is crucial for answering questions about city connections accurately.