Final answer:
The central idea of 'Looking for the Luck' is that the protagonist's attempts at finding luck lead to his misfortune. The term 'pell-mell' means disorganized, which describes the protagonist's pursuits. The story follows a chronological structure, tracing the protagonist's life from childhood to old age.
Step-by-step explanation:
The central idea of the text 'Looking for the Luck' by Mark Twain is that the protagonist's repeated attempts at finding luck lead to his misfortune. This is supported by the protagonist's failed ventures and unsuccessful strategies throughout the story. In paragraph 16, the term 'pell-mell' most closely means disorganized, which is evident in the chaotic and haphazard nature of the protagonist's pursuits. This is supported by the phrase 'pursued his odd ambitions' in the paragraph.
The structure of the story follows a chronological structure, tracing the protagonist's life from childhood to old age. It explores different aspects of luck through the protagonist's experiences and encounters. Therefore, option B - 'The story follows a chronological structure, tracing the protagonist's life from childhood to old age' - best summarizes the structure of the story.
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