Final answer:
The Medici family influenced the development of Renaissance art by providing patronage for Renaissance artists, encouraging commissions from leading artists.
Step-by-step explanation:
The Medici family influenced the development of Renaissance art by providing patronage for Renaissance artists. Lorenzo de' Medici, for example, encouraged his countrymen to commission works from leading artists such as Leonardo da Vinci, Sandro Botticelli, and Michelangelo Buonarroti. The Medici family's patronage of the arts played a significant role in stimulating the cultural and artistic achievements of the Renaissance.