Which option most clearly shows the relation between population growth and dependency ratio?

Correct answer: If children are very many, dependency pressure on the working population can rise

The correct answer is A. The dependency ratio compares people who are generally not in the working-age group with people of working age. Children and older persons may depend partly on workers for food, education, health care and other needs. If the number or share of children rises rapidly while the working-age population does not grow at the same pace, each worker may support more dependants. This can increase the need for schools, nutrition programmes and family spending. It does not mean that children have no value; it explains the economic responsibility carried by the working population. Option A correctly connects age composition with dependency pressure. B is wrong because rainfall is not the basis of the ratio. C is wrong because the ratio explicitly compares dependants with working-age people. D is wrong because the ratio is not always zero. Memory cue: more dependants per worker means greater dependency pressure.