The question asks for the correct sequence of selected countries based on their crude birth rates (CBR) in increasing order.
Crude Birth Rate (CBR): This measures the number of live births occurring among the population of a given geographical area during one year, per 1,000 total people comprising that population at mid-year.
Approximate recent crude birth rates (per 1,000 population) are:
| Country | Crude Birth Rate (per 1000 population) |
|---|---|
| Japan | 7.1 |
| Sri Lanka | 14.6 |
| India | 17.4 |
| Nepal | 18.4 |
Arranging the countries by their crude birth rates from lowest to highest:
Therefore, the correct sequence in increasing order is Japan, Sri Lanka, India, Nepal.