One of the roles of industrialization in economic development of Nigeria is

Step 1: Analyze the question The question asks for a role (a positive contribution) of industrialization in Nigeria's economic development. So we are looking for a benefit, not a problem or a drawback.

Step 2: Explain the concept Industrialization is the growth of manufacturing and processing industries in an economy. Its main contributions to economic development include:

• Employment generation: factories need workers, which creates jobs and raises incomes.
• Foreign exchange earnings and savings through exports and import substitution.
• Value added to raw materials (e.g., processing cocoa, cotton, and palm produce).
• Higher national income and a better standard of living.
• Technology transfer and skills development.
• Diversification of the economy away from over-dependence on oil.

Step 3: Evaluate the options

• A. Employment generation: a positive role. Industries create jobs, so this fits.
• B. Environmental pollution: a negative side effect, not a role.
• C. Target of enemy's attack: a possible risk, not a developmental role.
• D. Unemployment: the opposite of what industrialization should achieve.
• E. Uneven development: a problem that arises when industries concentrate in a few cities such as Lagos, not a role.

Step 4: Answer The correct option is A. employment generation.

Exam tip: When a question says "role," "importance," "contribution," or "advantage," eliminate options that describe problems, such as pollution, unemployment, or inequality. Also watch for the reverse: if the question asks for "problems" or "disadvantages," the negative options become the answers.