If a scientist has an idea that she wants to test in an experiment, what does she have? criteria
a theory
an observation
a hypothesis

a theory

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.

answer: the sentence in the text that contains both the topic and the author's single most important idea about the topic

explanation: aww pineapple so adorable