Final answer:
Impact and dot matrix printers can print duplicate pages or multipart forms because they use mechanical impact to transfer ink.
Step-by-step explanation:
The printer types that can print duplicate pages (multipart forms) are C. Impact and D. Dot matrix printers. These printers are capable of striking through multiple layers of paper, which is necessary to produce carbon copies or duplicates. Impact printers work by physically striking an inked ribbon against the paper, whereas dot matrix printers form characters by striking a pattern of dots using a print head. Both can be used with multipart forms to create multiple identical copies at once, something not possible with inkjet, thermal, or laser printers as they do not use mechanical impact to transfer ink.