The answer is c if am not mistaken
Dramatic irony occurs when the audience knows something that the characters don’t.
The correct answer for this question is "D. Oh how little seems the spanMeasured round the life of man." Among the following choices, the line in the excerpt from the poem "A Grain of Sand" by Frances Ellen Watkins Harper that indicates its subject is that Oh how little seems the spanMeasured round the life of man.