Hmm, I don't really understand the question and given I just started Language Arts in my classes I'm not familiar with this yet but I'll try and help. I looked up Participial Phrase and it said something about verbs. 4 is a verb so maybe it's 4? 1 is a pronoun, 2 and 3 are nouns and 4 is verb. "Participle Phrase is a form of a verb used in a sentence to modify a noun. " ... I'm thinking now it's 3 because it's a noun and it's in the participial phrase. I don't know. I don't think I helped much but I really don't get this. Sorry!