Answer: Misplaced modifier: wearing a bandanna. Should follow: man.
Step-by-step explanation: a misplaced modifier is a word, phrase, or clause that is improperly separated from the word it modifies or describes. Because of the separation, sentences with this error often sound awkward, ridiculous, or confusing. In the given sentence, the misplaced modifier is "wearing a bandanna" it modifies the noun "man" so the sentence should be: "The man, wearing a bandanna, leaned against the building."