Which sentence uses the past perfect tense? a. he was wondering about constellations when someone brought up the subject of astronomy b. since she had demonstrated the product already, she asked whether there were any questions about it. c. in the country, she found, the roads were less well traveled d. he lived in oregon, and during that period he discovered the joys of farming

B. Since she had demonstrated the product already, she asked whether there were any questions about it

Perfect past tense uses examples like "had been" or 'had said"

of course not love is   love u cant change it.

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.