How does imagery impact poetry?

A.
It shows readers how to use their senses to interpret poetry.
B.
It helps readers feel and experience the world the poet creates.
C.
It creates reoccurring visuals in the mind of the reader.
D.
It makes interpreting the poem easier for the reader.

faithful servants eumaeus and philaetius:

his ragged vest then drawn aside disclosed the sign conspicuous, and the scar exposed: eager they view'd, with joy they stood amazed with tearful eyes o'er all their master gazed:

these servants know ulysses by the scar he got when he was a child - so when he showed them the mark, they immediately knew this is truly their master and they hugged him, finally starting to believe his words.

not concrete, existing in thought or as an idea but not having a physical or concrete existence

we should all just get dogs.