I believe the answer is Participle Phrase.
isn't it obvious?
It's unicellular that means it has only ONE cell. you're welcome dear! :)
When reading the story a lot of things start building up to create this suspenseful moment, and the story Structure helps cause this suspense.
Answer: D. because he feels the exam was painfully tough
Explanation:
Verbal irony: a figure of speech when somebody means something other than what they said/they reality.
Paul says that the exam was as pleasant as a root canal, and root canals are not pleasant at all. This tells us that Paul did not find the exam nice, rather, he found it painful, hence he meant the opposite of what he actually said.