Final answer:
The correct answer is b) Cadenza. The cadenza is a section in a concerto where the soloist performs alone, showcasing their technical skill and virtuosity.
Step-by-step explanation:
The correct answer is b) Cadenza. In a concerto, the cadenza is a section where the soloist performs alone, showcasing their technical skill and virtuosity. During the cadenza, the orchestra pauses, allowing the soloist to improvise or play a specifically written solo passage. It serves as a highlight for the performer and can be a very impressive and showy part of the concerto.