Concept:Economic growth improves living standards only when national income grows faster than population.
Explanation:National income is the total value of goods and services produced in a country.
Uncontrolled population growth means that more people have to share the same national income.
The relevant measure is per capita income, which is national income divided by the population.
If population rises rapidly while national income is also rising, the extra income is absorbed by the additional people.
As a result, per capita income may remain low or even fall.
When the average income per person falls, poverty tends to increase.
The most direct consequence of increasing national income without proper population control is therefore a rise in poverty rather than improvement in welfare.
Answer:B. increase in poverty