It seems to me that, the thing wthat <span>the author has done in order to create a tone of seriousness in this piece is </span>a fact that he has used a long sentence with complex syntax to ask the reader to pay close attention.
Even though you haven't shared any options to choose the correct one, I bet this one will suit the question.
Regards.
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Answer:
frantic tone
Explanation:
The passage exhibits great confusion, fear, trauma, anxiety, hurry and adrenaline rush. Such description or the narration style involves a frantic tone.
Frantic tone means a mode of expression that involves great confusion and excitement.
Treasure Island by Robert Louis Stevenson is an adventurous novel which involves thrilling plot and a lot of action. The narration is based upon the scene development which is fast paced. Thus, the story needs a frantic tone to narrate the incident so as to get more attention from the reader.
