Final answer:
The da capo form suited seventeenth-century tastes by allowing singers to embellish melodies upon repetition, showcasing their vocal abilities.
Step-by-step explanation:
One way that da capo form suited the needs of seventeenth-century taste is that repetition gave singers the chance to embellish the melody, showing off their voices. In an era that saw the burgeoning popularity of opera and solo vocal music, audiences delighted in the technical skill and expressive capabilities of singers. Da capo arias, often found in operas and cantatas, allowed for significant embellishment on the return of the 'A' section, giving performers an opportunity to showcase their virtuosity and inventive musicality within the framework of the composition. The embellishments, including melismas and cadenzas, reflected the seventeenth-century taste for elaboration and emotional expression in music.