The alternation between orchestral refrains and virtuosic outbursts by the soloist(s) is known as fast movements in Baroque concerto as there is three movements in Baroque concerto, fast-slow-fast.Ritornello Form is used in the first and last movements of baroque concerto and this form every part is different but the passage sounds like it is similar to the other passage before that and the alteration is also included in this.
Answer
1. Measure 1 Beat 1: C
Measure 2 Beat 1: A
Measure 4 Beat 1: G
2. E C G C E C G C
the rest
3. B natural. Raises the Bb (from the key signature) a half-step.
4. Piano (soft).
5. Staccato. Played short with quick release.
6. Decrescendo. Gets softer over the course of the length of the symbol. This one starts with Forte.
7. F major.
Answer:
I'm not sure if this is what you wanted but hope this helps.
I think it’s c hope this helps :)