What error can happen if age structure is ignored in population growth analysis?

Correct answer: Future education, health and job demand may be misjudged

The direct answer is A: future demand for education, health services and jobs may be misjudged. Age structure means the distribution of people among age groups, such as children, working-age adults and older people. These groups have different needs. A large child population may require more schools now and more jobs later. A large working-age population may increase employment demand, while a large elderly population may require additional health and care services. If planners look only at total population and ignore age composition, they may build too few or too many facilities and prepare for the wrong future demand. Option B is wrong because age structure does not automatically make the birth rate correct. Option C is wrong because ignoring age data does not end migration. Option D is wrong because land area is unrelated to this error. Memory cue: total number tells “how many”; age structure helps tell “who needs what.”