In "The Notorious Jumping Frog of Calaveras County," one of the most prominent aspects of Jim Smiley's character is that he . is kind to all types of animals
can tell an entertaining yarn
hates to work for a living
loves to place bets​

yes yes it does !

a main idea dna proper infromation

i believe it is the first choice (1.)

because the major theme is(“both the wild and civilization have rules.”)

and also as u said,( based on what buck learns within the call of the wild, "both the wild and civilization have rules".this is true of humans within society as well.

he used romanticism in his works