In order to create space, Escher created space by ____________________
a.
varying the sizes of the objects to create and illusion of depth.
b.
curving the forms of certain objects, such as the bookshelf and ceiling, in order to create the 3-dimensional sphere of the mirror.
c.
leading the eye to a primary focal point (the man), and the rounding everything out.
d.
including all of the above aspects.