The Medici family was important to the development of Renaissance art because of its:
A. patronage of Renaissance artists.
B. control of the art market throughout Europe.
C. sponsorship of artist retreats in northern Europe.
D. successful attacks on Protestant iconoclasts.

Patronage of Renaissance artists

Explanation: I just took the test on APE X

i'm not sure i completely understand your question, but i will do my best.

i think the answer you are looking for is sequence. (see below)

a repeated melodic fragment would be best defined as repetition, while repeated chords (different or the same) could be a chord progression. however, you then mentioned the chord and melodic fragment beginning on higher or lower pitches, in that case, the answer could be best defined as a sequence. the definition of a sequence is as follows: "the restatement of a motif or longer melodic (or harmonic) passage at a higher or lower pitch in the same voice."

let me know if this !