What type of clause or phrase is italicized in the sentence below? the play, a three-act farce, amused everyone. appositive adverb clause infinitive adjective clause present participial phrase

"A three-act farce" is an appositive. It is not a clause as it lacks a verb.

An appositive is a noun or noun phrase that renames another noun right beside it. The appositive can be a short or long combination of words. The appositive tends to be placed between commas. In this particular case,  "A three-act farce" is renaming the noun mentioned before: the PLAY. And it is separated from the rest of the sentence with commas.  

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.