I believe your answer would be D.
Answer:
Population (No) Population (Nt)
20,000,000 20,820,000
20,820,000 22,000,000
22,000,000 23,735,000
23,735,000 25,843,000
25,843,000 28,183,000
Explanation:
The change in Gilders population could include factors like prosperous economy and improved healthcare. This is due to the fact that as the birth rates increase the death rates decrease. Improved healthcare has slowed down the death rate. Secondly, the prosperous economy contributes to amount of immigrants coming in and out of this country.
The correct answer is C. One change on Earth's surface can result in changes to other Earth systems.
Statistically, none of the other problems would make sense when looking at the graph, other than question A, which we know is the opposite way around.
Hope this helped!