Firstly, understand the body of the passage. Secondly, the topic and thirdly give them their answers
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!
The rhyme scheme is ABBA (Like the band). Night rhymes with sight. Cross rhymes with loss.
The answer to this question is:
Radiation
