The sentence with the optimistic tone is about Shanna, indicating that despite being an underdog, skillful coaching may enhance her chances of success. This reflects a positive outlook on her potential future performance. Optimism is highlighted through the possibility of improvement despite challenges. ;
The sentence with the optimistic tone is: 'Though Shanna is an underdog in the tournament, skillful coaching is likely to increase her success.' This highlights the potential for a positive outcome despite challenges. The other sentences reflect either nostalgia or pessimism, lacking the hopeful perspective found in Shanna's situation.
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