If a time-series chart shows urban population as a percentage rising over decades, what trend is most likely?

• A. Urban share remains constant
• B. A rising trend in urbanization
• C. Urban share declines
• D. Urban share fluctuates randomly

Answer: (B)

When a time-series chart shows the percentage of people living in urban areas increasing across decades, it indicates a rising trend in urbanization. This means the urban share is growing over time, typically due to factors like rural-to-urban migration, economic development that concentrates opportunities in cities, and expanding city boundaries. As the proportion of the population in cities climbs, the chart reflects a long-term shift toward urban living, even if total population grows or changes. If the line were flat, the urban share would stay constant; if it declined, the share would fall; and if it fluctuated without a clear direction, there wouldn’t be a consistent upward trend. Therefore, the best interpretation is a rising trend in urbanization.