Poem: O Captain! My Captain! by Walt Whitman

Which line from the poem presents a problem that the speaker cannot control?
a. Here Captain! dear father! (line 13)
b. This arm beneath your head! (line 14)
c. My father does not feel my arm, he has no pulse nor will, (line 18)
d. From fearful trip the victor ship comes in with object won; (line 20)

c. My father does not feel my arm, he has no pulse nor will, (line 18)