Read the passage:

all at once i imagined i saw shoal water ahead! the wave of coward agony that surged through me then came near dislocating every joint in me. all my confidence in that crossing vanished. i seized the bell-rope; dropped it, ashamed; seized it again; dropped it once more; clutched it tremblingy once again; and pulled it so feebly that i could hardly hear the stroke myself.

which detail from the passage the reader understand the strength of the narrator's emotions

all at once i imagined i saw the show of water ahead!

the wave of coward agony that surge through me then came near dislocating every joint in me

all my confidence in that crossing vanished

pulled it so feebly that i could hardly hear the stroke myself