Option 1 suggests that the correct sequence of events is 1 - 2 - 3 - 4. This means that the Establishment of the Planning Commission (event 1) happened first, followed by the Formation of the National Development Council (event 2), then the Approval of the First Five-Year Plan by the NDC (event 3), and finally the Constitution of the National Planning Committee (event 4).

Option 2 suggests a different sequence of events: 2 - 1 - 3 - 4. This means that the Formation of the National Development Council (event 2) happened first, followed by the Establishment of the Planning Commission (event 1), then the Approval of the First Five-Year Plan by the NDC (event 3), and finally the Constitution of the National Planning Committee (event 4).

Option 3, which is the correct answer, suggests the correct sequence of events: 4 - 1 - 2 - 3. This means that the Constitution of the National Planning Committee (event 4) happened first, followed by the Establishment of the Planning Commission (event 1), then the Formation of the National Development Council (event 2), and finally the Approval of the First Five-Year Plan