Scientists call the structure of layers in society and people's movement between them... social control
social stratification
social conflict
social solidarity

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.

rivernaysan = anniversary

for some reason there is another anniversary but, that is correct

- r3ktforgood ☕

the answer is b