When a writer attempts to describe something so that it appeals to our sense of smell, sight, taste, touch, or hearing
Answer: Force Calypso to let him go.
Reasoning: The send Hermes to Calypso and tells her to let him go and threatens to destroy her Island.
Both use flashback to provide crucial background to the characters' situation
when is it due? and what is your topic?
The Gateway Arch- Common Noun
St. Louis, Missouri- Proper Noun
Hope this helps :)