When should a student writing a research-based paper directly quote a research text instead of paraphrasing or summarizing it?

when the words quoted are specific and unique

Explanation:

Direct quotations can be used as a rhetorical tool when words used communicate an idea that is stated in a specific and unique way. This type of quotation happens when the passage explains the idea in a way so complete and sufficient that it can not be reformulated.

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.