The correct answer is C. Plotters.
A plotter is a computer peripheral that outputs images to paper or other media using a pen or other marking device. Plotters are used to create high-quality drawings, blueprints, maps, and other technical illustrations.
Chain printers are a type of impact printer that uses a chain of characters to print text. Daisy wheel printers are a type of impact printer that uses a daisy wheel of characters to print text. Thermal devices are a type of printer that uses heat to create an image on paper.
Chain printers and daisy wheel printers are not suitable for producing continuous line drawings because they can only print one character at a time. Thermal devices can produce continuous line drawings, but they are not as precise as plotters.
Therefore, the correct answer is C. Plotters.