Answer:
Contrasting the steps for man and a leap for mankind
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!
Just delete what you wrote in edit mode I think? That is the only way I could possibly delete my answer.
Answer:
Cost
Focus
Stuff
Cots
Cutoffs
Cuffs
Scout
Scuff
Soft
Tuff
Cut
Cuts
Oust
Off
Outs
Explanation:
These are the words I could find.