Which book title best represents Romanticism?

Which is the correct chronological sequence of these works by Michelangelo?

a. Rondanini Pietà; the Rome Pietà; David; the Sistine ceiling b. David; the Rome Pietà; the Sistine ceiling; Rondanini Pietà c. the Rome Pietà; David; the Sistine ceiling; Rondanini Pietà d. the Rome Pietà; the Sistine ceiling; David; Rondanini Pietà

In its earliest form, the motet was a ____ to which sacred words were added

A) chanson B) discant clausula C) conductus D) cauda