Stock characters represent specific stereotypes. They represents types and not individuals. Examples are mean stepmother and loyal servants. I hope this helps!
From girl to graduation because it shows she is getting older and she’s coming of age
I believe that the best answer for this question is an adjectival prepositional phrase because it describes a noun. It modifies the words "a pygmy hippo," which is the subject of the sentence and therefore a noun. Adjectival prepositional phrases modify nouns, while adverbial prepositional phrases modify verbs, adverbs, or adjectives. Hope this helps.