The best anser is C - gaunt. Gaunt means thin and looking exhausted, such as when one is old or tired.
The answer can be actually found directly in the poem, which contains the line: 'An aged thrush, frail, gaunt, and small'. Gaunt is used directly in the poem!
It can help you learn to enunciate them better, and if you can say it better it will help you to better rememer the definitions <span />
Answer
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