The incorrectly labelled classical element is the form
because Form is the structure of the music. Music is arranged in large musical
sections. It is not expanded and experimented in strict form, the rest that are
listed like the melody, rhythm and harmony are correct in definition.
C and D. Pop art has many vibrant colors that are used on many pop culture idols. For example, Andy Warhol does many pop art works. Look him up if you want :)