1. what classical era accompaniment technique is used in this piece?
2. *circle the main motive. what variation technique is used to develop the motive in measures 17-20?
3. using the letters “a” and “b”, name the form of this piece. *now label the score directly, with each letter indicating the start of a new section.

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 !