The third movement of the sonata form is referred to as the
a. recapitulaton.
b. variation.
c. finale.
d. cadenza

The third movement of the sonata form is referred to as the as the Cadenza.

So, Option D is correct which is cadenza.

The structure of Sonata form is based on contrasting of musical ideas, consisting of three main sections: exposition, development, and recapitulation and sometimes there is a fourth section which is also included that is Coda. There are four movements in Sonata form.

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 !