The dark field is __________

a. where Darth Vader resides
b. based upon the color field painters of the mid-twentieth century
c. the ground that covers a metal plate in an etching before being placed in an acid bath
d. when ink covers the entire plate before being removed to create the desired image in monotype
e. the glue that forms a stencil in silkscreen

d. when ink covers the entire plate before being removed to create the desired image in monotype