Which of the following featured theatres that were built into a hillside?

Which is a reason we can consider the second movement of Fanny Mendelssohn Hensel's Piano Trio op.11 to be "a song without words"?

a. It uses a poetic meter. b. It uses a modified strophic form. c. Mendelssohn Hensel wrote the German word for "song" at the top of the page. d. all of the above

For Siena this fresco and its location illustrate the theme of __________.

A. civic devotion and wise counsel B. sacrifice for the common good C. the holiness of government servants D. the separation of church and state