Answer:
1A. rumors are molded from truth and although it is obvious most ore untrue (such as murder) it is possible he served in the war and was an oxford man
1b. Given the times as the american dream was everywhere, it is possible he got his money by monopolizing or smuggling goods, given this is around the time of prohibition he may be a bootlegger or he may be wealthy from status from the war,he represents new money so he wouldn't have inherited it.
1c. Gatsby may be throwing such parties to grab someones attention, he himself doesn't seem to enjoy or be part of the festivities but maybe he hopes someone else will.
1d.I think Gatsby's mysterious character is charming and seems to have a warm hearted demeanor through the description of his smile and attitude towards Nick.
Step-by-step explanation:
hope this helped a lot