Leonardo da Vinci
because I like how he draw the Mona Lisa and how he makes her mysterious smile
The orthogonal lines in the work merge at the vanishing point. In a perspective drawing, the artist uses parallel diagonal lines which meet and diminish to a vanishing point. These lines are called orthogonal and create the perspective and a more realistic view. The vanishing point offers the painting a three-dimensional look.
The answer is:
A. Double Stops
They were found on rough ceilings and walls of the caves indicating where the magic rituals were performed