Correct Answer: (a) A surge in the population in the productive age group
Solution:'Demographic bonus' refers to increase in productive (working) age group in population. Demographic dividend, as de- fined by the United Nations Population Fund (UNFPA), is "the economic growth potential that can result from shifts in a population's age structure, mainly when the share of working age population (15 to 64) is larger than the non-working age share of the population (14 and younger, 65 and older). This indicates that more people have the potential to be productive and contribute to growth of the economy.