Final answer:
Leonardo da Vinci was apprenticed to the artist Andrea del Verrocchio, which was his primary form of education; he did not attend university or an art school, nor was he mentored by Michelangelo.
Step-by-step explanation:
Leonardo da Vinci did not have a formal education in the sense of attending a university or a renowned art school. Instead, he was apprenticed at the age of 14 to the Florentine artist Andrea del Verrocchio. During his apprenticeship, Leonardo acquired a diverse set of skills and knowledge that would shape his career as a painter, sculptor, inventor, and scientist. His voracious appetite for learning, combined with the rich intellectual environment of Florence, allowed him to develop his talents across a wide range of disciplines. He was not mentored by Michelangelo, as the two were near contemporaries and had very distinctive, individual careers.