I think the second one since the largest bar (?) is for infants meaning that the population is mostly 4 year olds. Hopes this helps!
Answer:
I believe that the discovery of new artifacts can bring many improvements to historical interpretations along with additional information for understanding historical facts. Thus, new causes can be found and analyzed that could lead to a certain phenomenon.
The answer is B.......B.....
If the region rises in population it will most likely cause a bigger scarcity in water, which may lead to a drought. A drought can ruin crops and leave land dry.
The answer to the question is 3/4
Hope this helps!