Concept:Budget allocation in a pie chart is proportional to the sector angle, with the total angle equal to 360∘.Explanation:From the chart, Manufacturing has a sector angle of 36∘ and Agriculture has a sector angle of 72∘.Total budget =N100,000,000.Expenditure on Manufacturing =360∘36∘×N100,000,000=N10,000,000.Expenditure on Agriculture =360∘72∘×N100,000,000=N20,000,000.Thus, the ratio of Manufacturing to Agriculture is N10,000,000:N20,000,000=1:2.Answer:A. 1:2