Apex
read this passage from "the city without us" by alan weisman:
the weeds are followed by the city's most prolific exotic species, the chinese ailanthus tree. even with 8 million people around, ailanthus—otherwise innocently known as the tree-of-heaven—are implacable invaders capable of rooting in tiny chinks in subway tunnels, unnoticed until their spreading leaf canopies start poking from sidewalk grates. with no one to yank their seedlings, within five years powerful ailanthus roots are heaving up sidewalks and wreaking havoc in sewers.

which statement best explains how irony is used in the passage?

a. tree that is perceived negatively by urban landscapers provides a reliable source of shade.
b. species of tree imported from china has become naturalized to the extent that it has become a pest.
c. tree that has destructive tendencies manages to take root in the unlikeliest of places.
d. weed tree that wreaks havoc on the environment is referred to favorably as the "tree-of-heaven."

The situational irony refers to an end different that the one expected or planned, in this case Alan Weisman described in this excerpt of "The City Without Us" a kind of weeds that ironically is known as “the tree-of-heaven” and that is also one of the “most prolific exotic species”, however does not good to the city or community due to bad result of his rotting affecting the subway, sidewalks and sewers. The answer is D. weed tree that wreaks havoc on the environment is referred to favorably as the "tree-of-heaven."

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.