Help. please help.
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type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.

odysseus shows many acts of bravery in homer's epic poem the odyssey. first, he shows bravery when he tricks polyphemus, the cyclops, and gouges out his eye. this is an act of bravery. it will also cost him because polyphemus was the son of poseidon, the god of the sea.

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.

wheres the passage with the idiom underlined