Poem: O Captain! My Captain! by Walt Whitman
Which line in the third stanza helps the reader understand the meaning of the word "tread" in line 22?
a. the ship is anchor'd safe and sound, its voyage closed and done, (line 19)
b. Exult O shores, and ring O bells! (line 21)
c. Walk the deck my Captain lies, (line 23)
d. Fallen cold and dead. (Line 24)