Question

When reading a poem orally the commas signify what to the reader?

Answer 1

B.
Read this line, out loud. 
It was a short pause that contributed to the flow of things. This applies even in a sentence.

Answer 2

Answer:

When reading a poem orally the commas signify to the reader, a short pause for emphasis.

Explanation:

The use of commas in poetry is a way to emphasize a specific word or sentence as it is read at load to the audience; they also have the objective of separating ideas and, showing to the reader that the topic or specific point is being changed into another one that might be related, it is a common resource for poets to add intensity to their work.