By using the one child policy to keep the population under control.
D. Rolling hills . Its usally Plateu but I gusse rolling hills would work too
What are the answer choices?
I think it’s less than 10% of rain
Explanation:
Germany's condition of reduction of population is because of pandemic effect on global recolation.
Positive:There would not be much pandemics, diseases,& so on.
Negative: There would be an effect on economy, there'll be few or less workers,so on.(This would be a larger effect than the positives of course)
One reason of undergrowth is of jobless rate & bare utilisation anticipation.

I think this is the answer.