Hoover's approach was to do nothing and let the problem fix itself. FDR's approach was the New Deal, which gave people jobs, food, money, etc.
Answer: b.) glaciation led to the development of Louisiana's extensive system of bayous and swamps.
Explanation: This seems like the best answer choice so I think it is B.
C is the right answer by the way
In my view the period that has had the biggest impact on the development of US society is The Great Depression. That depression brought a huge economic growth but also changed mass culture that swept many Americans into consumer society.