What does a High dependency ratio in a population signify?

A huge population of old age people and children. A large number of housewives. Massive unemployment. A large section of villages dependent on industrialized cities and their working population

A huge population of old age people and children.

An increase in Life expectancy because of modern health care facilities will result in the ageing of the population, and a high birth rate which means a large number of children increases the dependency ratio.