Imagine you are miss caroline. write a letter to a friend or family member, explaining your first day at the school.

an expression designed to call something to mind without mentioning it explicitly; an indirect or passing reference.

fond of fighting is the answer

ye

explanation:

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.