The answer is B: As an Adverbial Prase. A <em>Prepositional Phrase</em> includes a preposition, its object and its modifiers. The Prepositional Phrases can function as <em>adverbial phrases or adjective phrases</em> to modify other words in the sentence. In the example, " Hearing the key<em> in the lock</em>" and "...dashed <em>to</em> <em>the front door</em>." in and to are <em>prepositions </em>that are used to form the two prepositional phrases: "in the lock" and "to the front door."
Question: Wouldn't we have to read the book to know they're character trait? Can you maybe take a screenshot of the readings and then I can help you :)
Where are the answers to choose from ?