Final answer:
In Walt Whitman's 'O Captain! My Captain!', the 'prize' symbolizes the Union's victory in the Civil War, juxtaposed with the sorrow over Abraham Lincoln's death.option A is correct answer.
Step-by-step explanation:
The poem 'O Captain! My Captain!' by Walt Whitman is an extended metaphor that reflects the feelings of Americans, especially Whitman himself, after the assassination of President Abraham Lincoln. When the poem mentions 'the prize we sought is won', it is referring to the Union's victory at the end of the Civil War.
This triumph is bittersweet, however, as it coincides with the loss of their leader, Lincoln, which illustrates the victory (the prize) but also the grave cost of the Civil War (the Captain's death).
The ship symbolizes the United States, and the 'prize' symbolizes the end of the Civil War and the preservation of the Union. The poem contrasts the joy of the victory and the end of the 'fearful trip' or war with the personal and national grief of losing Lincoln, who is embodied by the fallen Captain.