Answer The indicative and the imperative moods are fairly common. You use the indicative mood in most statements and questions.
Answer - B) The Great Depression
During The Great Depression no one had any money and everyone was out of their jobs. It was extremely hard times, so this song "Brother, Can You Spare a Dime?" was saying "I need money. Could you spare even a dime."
Best of luck,

Do you have more of an idea other than just ancient castles?