The first National development plan period was from

Analyze the question: It asks for the period of Nigeria's First National Development Plan.

Concept: Nigeria has had several development plans since colonial times:

• 1946-1956: Ten-Year Plan of Development and Welfare (colonial)
• 1955-1960: Colonial plan (the Federal/Regional plans)
• 1962-1968: First National Development Plan (the first plan after independence, and the first "national" plan)
• 1970-1974: Second National Development Plan (post-civil war reconstruction, rehabilitation and reconstruction)
• 1975-1980: Third National Development Plan
• 1981-1985: Fourth National Development Plan

Step-by-step solution:

1. The question says "National" development plan, so we look for the first plan after independence (1960), prepared by the Federal Government.
2. The First National Development Plan began in 1962 and ran to 1968.
3. Check the other options: • A (1955-1959) was a colonial-era plan, not a national plan. • C (1965-1970) does not match any plan. • D (1970-1974) is the Second National Development Plan. • E (1975-1980) is the Third National Development Plan.

Correct answer: B (1962-1968)

Exam tip: Remember the pattern 62-68, 70-74, 75-80, 81-85 for the first four national plans. The first plan is the only one with a six-year span, and the second plan begins right after the civil war ended in 1970.