Study the diagram carefully and attempt the questions.

How long did it take to reach the population from 3 billion to 6 billion?

30 years 45 years 41 years 39 years

39 years

The correct answer is Option (4) → 39 years 3 Billion Population- 1960 6 Billion Population- 1999 Increase for 3 to 6 billion in 39 years (1999-1960)