D.mao zedong`s communlist party defeated chiang kai-shek`s nationalist party in china
Answer:
A) Agricultural
Explanation:
Although all of these industries would be affected by these natural disasters, an agricultural buisness would be completly destroyed by these events and all of the crops would die. Therefore, it is the MOST affected.
She was a very good leader and helped made Prussia a strong and equal economy.
I think that the key point here is the "easily reproducible" - because all of them can be scientific questions (even a! it could tell us about about the human psyche!)
but d. is the best answer for a reproducible experiment. B could also make a good experiment, but it would be too expensive to be easily reproducible. C is calling for a more complex analysis that is too complex for an experiment. And a would require more questionnaires than experiments