Why doesn't robinson crusoe want to shoot the savages that are running after the escaped man?

they bound logs together and built a raft. enkidu steered it down the great river. gilgamesh carried humbaba's head.

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.