Answer:
The significance of this statement is that you need to reflect on who your friends are and if you could really consider them as your friend. You need to evaluate if they value you as a friend and that they will always be there to celebrate in the good times and provide support in the bad times.
Explanation:
Based on the excerpt, the statement that best strengthens Feldman´s claim that people are mostly honest is b. Feldman´s payment system was largely successful. His payment system is based on honesty, because he leaves the bagels and a cash basket in which anyone who took a bagel would leave cash, even if people could take a bagel and not pay, or even take money out of the basket, that did not happen. As he says "it was an honor-system commerce scheme, and it worked."
In order of this:
Climax
Falling Action
Exposition
Resolution
Rising Action
D because Gatsby is telling him all these wonderful things