Read the following excerpt from Emily Dickinson’s “I Like to See It Lap the Miles” and answer the question.

Then - prompter than a Star

Stop - docile and omnipotent

At it’s own stable door -

The underlined phrase prompter than a Star in the excerpt above is , meaning that the train was .

a) a simile / in its motion as slow and steady as a star moving across the sky
b) a metaphor / as punctual as the arrival of a star to its predicted position in the sky
c) personification / as popular as a famous celebrity
d) a metaphor / moving faster than a star moves across the sky