How do the syntax, punctuation, and choice of the first-person plural form of address contribute to our understanding that this message was intended to be spoken rather than written?

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.

umm we do not your answer or what you are talking about

choices ? or is this a actual question from yourself ?

they bound logs together and built a raft. enkidu steered it down the great river. gilgamesh carried humbaba's head.