To let Rue know she had been there what kind of leaves does Katniss scatter around their old campfire

Mint leaves. She knew Katniss would know, but the Careers wouldn't think anything of it.

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hope it helps

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.

c hope this you