How did the turtle show its struggle for survival?
It opened its beak.

It moved to the side of the road.

Its toenails slipped in the dust.

It kept on moving forward.

D. it kept on moving forward

Explanation:

the keyword is struggle, so the turtle is shown to have determanation by struggling to do what it needs to survive, its not gonna sit around and die

every person should make it a priority to serve at least two hours per week.

it's an extremely important civic responsibility that is invaluable to citizens most in need is the correct one

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.