If an area's growth rate is continuously declining, for which long-term change should administration prepare?

Correct answer: Changes in age structure and service demand

The correct answer is A: administration should prepare for changes in age structure and service demand. A continuously declining growth rate means that the number of new people being added is becoming smaller relative to the existing population. Over time, this can alter the balance between children, working-age adults and older people. The exact future pattern depends on fertility, mortality and migration, but planning must consider changing needs. Services such as schools, health care, employment support and care for older people may not be needed in the same proportions as before. Option A is correct because population change affects public planning. Option B is unrelated to demographic growth. Option C concerns soil characteristics, not population structure. Option D is wrong because density remains useful for understanding how people are distributed. Memory cue: a changing growth rate means changing future population needs, not a change in physical geography.