Political and economic power shifted to the middle class from the aristocracy and the ________.

Which statement best describes Wassily Kandinsky's Improvisation 28?

a. painted on a geometric grid that dissolves object into planes and angular shapes b. used multiple rhythms to create jarring dislocations of rhythm c. its swirling lines and color have no reference to figure or story d. used atonal harmonies to create an atmosphere of dissonance

Which of the following were vocalists who emerged during the "Jazz Age?"

a. Mildred Bailey b. Cab Calloway c. Bessie Smith d. All of the above