A.
Many of the outstanding figures of the past were exceptionally versatile men. Leonardo da Vinci, for instance, rolled a painter and an inventor into one.
B.
In the past, there have been many outstanding figures, such as Leonardo da Vinci, who is painter and inventor rolled into one.
C.
Many of the excellent figures of the past were exceptionally versatile men. Leonardo da Vinci, for instance, who rolled a painter and an inventor into one.
D.
In the past, many excellent people were preeminently all-round. For instance, Leonardo da Vinci rolled a painter and an inventor into one.