Which sculpture employs contrapposto?

Which of the following best describes the vocal roles in this work?

a) demanding and ostentatious b) demanding but by no means ostentatious c) exceedingly undemanding d) demanding but giving the impression of simplicity

Pitch aspects include

A. melodies that are accompanied by chords B. melodies that occur simultaneously at different pitch levels C. several different melodies that occur simultaneously D. a single, unaccompanied melody played in unison