Comparing population rates across countries

Steps:

• Identify birth rates, death rates, and natural increase (birth rate minus death rate) for each country.
• Check option A: Scan for decreasing populations (negative natural increase); verify if only Nigeria qualifies.
• Check options B and C: Compare lowest birth/death rates to their counterparts.
• Check option D: Locate lowest natural increase and confirm it's the US.

Why D is correct:

• Natural rate of increase is defined as birth rate minus death rate; the table shows the US with the smallest positive (or negative) value, indicating slowest growth.

Why the others are wrong:

• A: Multiple countries likely show decreases or stable rates, not just Nigeria.
• B: Lowest birth rate country does not align with highest death rate.
• C: Lowest death rate country does not have the highest birth rate.

Final answer: D