Why is the Mona Lisa a primary source?

The Mona Lisa is considered a primary source because it is an original work of art created by the artist Leonardo da vinci in the early 16th century. As an authentic piece from the Renaissance period, it provides direct insight into the artistic techniques, cultural values, and aesthetic preferences of that time. Additionally, it serves as a firsthand representation of da Vinci's skill and innovation, making it a valuable artifact for studying art history and the context in which it was created.