Question

Read this extract from "A Psalm of Life" by H. W. Longfellow:
In the world's broad field of battle
In the bivouac of Life,
Be not like dumb, driven cattle!
Be a hero in the strife!
What message does the poet convey through the combination of metaphor and simile in these lines?
The poet suggests an escape from reality into the realm of fantasy.
The poet emphasizes the sorrow of those who think for themselves.
The poet urges the reader to take charge of his or her own destiny.
The poet urges the reader to be part of a larger group.