In your own words explain the proper use of the comma to separate elements in a series

The proper was to use a comma is so you can make the sentence meaning clear to the reader and easier to read and see.

Responses may vary but should include some or all of the following information:

A comma is used to separate two or more coordinate adjectives modifying the same noun. Coordinate adjectives are those that provide equal modification to the noun. For example: James Hadley Billington has held the respected, prestigious office of Librarian of Congress since 1987.

Explanation:

on edg.2020

both the address and the poster use diction to convey their message. diction is defined as a style of writing or speaking based on the types of words chosen in order to send a message. parallelism is when a similar sentence structure is used for several sentences on a text; roosevelt's address doesn't follow that. repetition has to do with repeating a word or sentence in order to emphasize and idea, however neither the poster nor the address use repetion. finally, the address doesn't use images to convey a message.