Final answer:
Collage is an art technique of assembling different pieces of art, while printmaking is a process of creating multiple impressions from an original image.
Step-by-step explanation:
Collage is an art technique of assembling different pieces of art into one cohesive art piece. It involves gluing together various materials such as newspapers, magazines, paint, photographs, and found objects. Printmaking, on the other hand, is a process of creating multiple impressions from an original image or template. It involves techniques such as relief, intaglio, and planar printing. Photography, which involves capturing images using cameras, is a separate medium. Therefore, the correct answer is C) Printmaking.