Here are the answers to your questions:
Question 9: What percent of the population makes up the Middle Class?
Answer: Option B - 50% (Though this may vary depending on different definitions and studies, around 50% often represents a common estimate of the middle class in many contexts.)
Question 10: In 2008 the U.S. economy took a huge blow that left many people unemployed, this was known as the ______________.
Answer: Option C - Great Recession
Question 11: Structural Mobility is defined as:
Answer: Option B - a societal change that enables a whole group of people to move up or down the class ladder.
Question 12: Social stratification is a system that:
Answer: Option D - Ranks society members into categories.
Question 13: ____ is a group who shares a common social status based on factors like wealth, income, education, and occupation.
Answer: Option C - Class
Let me know if you need further assistance!