The concept of double consciousness was coined by —— A. Langston Hughes
B. W. E.B. Du Bois
C. Claude McKay
D. Countee Cullen

xd

explanation:

the underline word is basically like a prepositional phrase.

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.

with what words? i dont see them