Schubert: Six Moments Musical, Op. 94, No.6

The first section is the expository section, which is a parellel period with a HC at the end of the first 8 measures, and a PAC at the end of the 16th measure. I think the next section functions as developmental and transitory. There is a key change, and you can still pick the original melody out, but it is slightly altered, which qualifies it as developmental. The chord progression and the direction of the melody are unpredictable. I think it also serves as transitory because it leads back to the A section.