As the term relates to this particular selection, the phrase ...

[swpotter12]

As the term relates to this particular selection, the phrase tasto solo relates best to the fact that the soloist?
 
  a) is called upon to realize full harmonies above the basso continuo line
  b) plays only in the solo episodes
  c) is called upon to play only the lowest notes of the basso continuo line
  d) is called upon to play the lowest notes and double them an octave above

Question 2

The opening of this composition would have surprised first-time listeners because
 
  a) one hears a portentous, mysterious drum-roll
  b) the soloist enters unexpectedly almost at once
  c) one hears muted strings
  d) its two quick and lightning-bolt-like chords

[macmac]

Answer to Question 1

c

Answer to Question 2

b

[swpotter12]

Excellent

[momolu]

Gracias!