Which of the following zones is the least industrialized in Nigeria?

Among the industrial zones listed, Lokoja-Ajaokuta is the least industrialised in Nigeria.

Although the Ajaokuta Steel Company was established in the 1970s with the aim of becoming a major industrial hub, the steel complex has never operated at full capacity and has faced decades of mismanagement, incomplete construction, and policy challenges. Lokoja, the Kogi State capital, is primarily an administrative and trading centre with minimal manufacturing activity.

By contrast:

• Lagos-Ikeja is Nigeria's most industrialised zone, hosting the largest concentration of manufacturing industries, port facilities, and commercial enterprises in the country.
• Port Harcourt-Aba is a major industrial zone driven by the petroleum industry, petrochemicals, and a thriving manufacturing sector in Aba.
• Kaduna-Zaria is an established industrial zone in northern Nigeria, with textile mills, vehicle assembly plants, and other manufacturing industries.