Final answer:
The style of Giotto di Bondone was closest to the Byzantine style. Despite his innovations towards naturalism, his early works still show Byzantine influence, unlike Leonardo da Vinci's more advanced Renaissance style.
Step-by-step explanation:
The style of the painter that was closest to the Byzantine style among the options provided is Giotto di Bondone. Giotto is recognized for breaking away from the Byzantine tradition, yet his early works were indeed influenced by the Byzantine style, especially through his predecessors like Cimabue and Duccio of Siena, who painted in the Byzantine style but incorporated elements of the Gothic style.
Giotto's innovations moved towards naturalism and employed techniques like foreshortening and chiaroscuro; however, the residue of the Byzantine influence was still evident in his early works. Meanwhile, artists like Leonardo da Vinci signified a more advanced stage of the Renaissance with styles that diverged significantly from the Byzantine approach.