I think that the key word here is "effects" - the study would be into effects of oil - so not other oil-related topics.
Because of this the correct answer is
<span>a. How does oil shape social, political, and economic conditions in southwest Asia?
here the word "shape" is a synonym to "create and influence" - so it's about the effect!</span>
Answer:
Henry Hudson explored looked for a way to go west
The current form of American government is very flawed, but it is effective in the sense that it is capable of changing without revolution, which is the most important element of any government.
Answer: Social roles began to change.
Explanation:
With improvement in farming communities hunters weren’t as mandatory and farmers that grew successful crops began to move up in social status. Meaning less need for hunters more need for farmers etc..