What is one way that the standard of living increased for middle-class people during the Industrial Revolution?
A. The families of the middle class could buy several sets of ready-made clothing for members of their families.
B. The middle class experienced an increase in their standard of living because they could purchase art collections.
C. Many middle-class families began to sponsor charitable hospitals for lower class.
D. With more income and leisure time, middle-class families could afford to go to the theatre and eat out at restaurants.