Illusion. (n.) a false idea; something that one seems to see or be aware of that really does not exist.
Answer:
Visually descriptive or figurative language, especially in a literary work.
Just try to make it as imaginable as possible let your readers feel and see what you are writing to them
Answer:
D. The speaker thinks he took the road less traveled, but is not sure if it has made any difference in his life.
Explanation:
Answering this question involves reading the entire poem to fully understand the context, while laying emphasis on lines 9-12. After which the answer can be seen in lines 18-20.