Which choice displays appropriate use of parallel structure and correct use of commas?

Hi there! It looks like you forgot to upload the questions that this question is based on.  Because of that, I'm not able to directly answer your question.

Parallel structure is the concept of having the same grammatical structure within one or multiple sentences.  For example, saying "I am running, swim, and ate" is not appropriate use of parallel structure because the verbs are inconsistent with the tenses used.  And as for the comma, make sure you use it to separate items in a series (of 3 or more), and for attaching thoughts onto a sentence (such as the first part of this sentence).\

Hope this helped a little!

answer: provide the speech

explanation:

this is what i put and it was correct

it's a way for authors to communicate with reader in this time period. books from the past can teach us about life.