Evaluates a piece in terms of its use of the elements of art.
a. marxism
c. iconology
b. formalism
d. iconography user: iconography refers to
a. the study of culture and society in art.
b. the influence of gender on the imagery and message in art.
c. the elements of art used to create a work of art.
d. the study of symbols and images in art.

d.

the study of symbols and images in art.

c would  be the answer.

it seems to me that yes they solo on the chord changes.  coltrane for sure solos on the chord changes. instead of changing scales, they use a different method over the chord changes. this melody is very  unique but may often times even be considered simple, which is quite common in this modal  type. for example, there are changes from the key of minor to major in this piece, which makes it  unique in its own way.