Read these lines from stanza 3 of "Because I Could Not Stop for Death" and answer the question.

We passed the School, where Children strove

At Recess – in the Ring –

We passed the Fields of Gazing Grain –

We passed the Setting Sun –


Or rather – He passed us –

What idea does the narrator imply in the last line?

a power greater than anything made by humans
the passing of childhood
the inability of humans to control their destiny
the end of a long life