Answer:
Three, is the right answer.
Step-by-step explanation:
Leonardo da Vinci was a sculptor, painter and engineer of the Renaissance period. He is best known for paintings including "The Last Supper" and "Mona Lisa and the invention known as the flying machine. These are the paintings notable for a kind of qualities that have been greatly reflected by students and considered at elevated extent by collectors and scholars. In most of his works, we can see a total of three themes.