The character in i know why the caged bird sing s that is most like the free bird in the caged bird is

Mrs. Flowers is most likely the free bird in "The Caged Birds"

a lot

explanation:

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.