The prepositional phrase 'in the lock' acts as an adverbial phrase in the sentence, modifying the verb by providing context. It tells us where the key is located, which enhances our understanding of the dog's action. Therefore, it answers the question by indicating its function related to the action described. ;
The prepositional phrase 'in the lock' functions as an adverbial phrase in the sentence because it modifies the verb 'dashed' by providing context about where the key is located. This helps clarify the dog's actions. Thus, the chosen answer is B. as an adverbial phrase.
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