Final answer:
Etching is the technique used in Rembrandt's artwork One Hundred Guilder Print. It involves incising a design in a wax or varnish coating on a metal plate, followed by etching the lines in an acid bath.
Step-by-step explanation:
The technique used in Rembrandt's artwork, One Hundred Guilder Print, is etching. Etching is a kind of engraving in which the design is incised in a layer of wax or varnish on a metal plate. The process involves applying a protective coating to the plate, scratching the image through the coating, submerging the plate in an acid bath to etch the lines, removing the coating, inking the plate, and then printing the image. The amount of time the plate is kept in the acid bath determines the dark tones in the resulting print.