D. By asking what characteristics are important to the myth-tellers, Mario is able to determine that they value determination and loyalty.
The plot of each myth is very different, so it is important to not just look at the plot or setting, because it will be difficult to make connections. By boiling the characters down to *how* they act, rather than *what* they do, Mario can see that their characteristics are very similar. Since these characters are shown as heroes, Mario can determine that those values they share are important in a positive way to the myth-tellers.