Así es joven qué te vaya bien:)
the Mona lisa is a half-length portrait of Lisa Gherardini by the Italian Renaissance artist Leonardo da Vinci. the painting is a portrait of Lisa Gherardini, the wife of Francesco del Giocondo and is believed to have been painted between 1503 and 1506. Leonardo may have continued working on it as late as 1517.
answer: i think indoor plumbing, sorry if wrong!
sorry for late answer:(
Answer: Pigments
Explanation: Most pigments used in manufacturing and the visual arts are dry colorants, usually ground into a fine powder.