I don't know this for sure but if an author has something to declare and they can't back it up it's just an idea. So if you want to identify the claim you have to have statistics and facts to prove what you're saying. But remember I am not am expert so whatever you think the answer is go with it. Hope this helps ;)
All of the stated options are correct about the usage of quotation marks, except for C, indicating measurements in inches.
I do not know the story but if it is a confirmation in between two people, it is Man vs Man conflict.
