When is it most helpful to use a direct quote in your research paper?

It is most helpful when it is more likely to be more accurate than summarizing or paraphrasing.

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.

adding more details about the struggle rainsford experiences as he swims to the shore