Irony is definitely the answer to your question.
Answer: C. They show the speaker's feelings and behaviour at the start of her marriage, when she was young and less mature.
The poem "The River Merchant's Wife: A Letter" by Ezra Pound describes the transformation that a young girl undergoes when she finds a partner. At the beginning of the poem, the girl describes how she was timid, and how she kept her head down. However, as time goes by, she becomes more comfortable with her partner, eventually missing him terribly when he is away. The line describes the first stage of this relationship, when her shyness prevented her from being herself.
The correct answer is "the Whiskey Rebellion takes place in western Pennsylvania". After the Revolutionary War, the US accumulated debts amounting to about 54 million US dollars of the time. Treasure Secretary Alexander Hamilton (under George Washington's government) decided to tax the production of whiskey to collect funds for the government. Many farmers of Western Pennsylvania fiercely rejected the measure since they produced home-made whiskey for additional income.
Based on the passage, I believe it is D