Print Double-Sided

C.

The setting that the technician should advise the user to change in the printer settings to print a large job on both the front and back sides of the paper is C. Duplex.

Duplex printing allows the printer to print on both sides of the paper automatically. This feature can save paper, reduce printing costs, and help the environment. Duplex printing is sometimes referred to as double-sided printing.

The other options listed in the question are:

A. Collate - This setting refers to the order in which the printer prints multiple copies of a document. If collate is selected, the printer will print each copy of the document before moving on to the next copy. If collate is not selected, the printer will print all pages of the document in order, then print them again for each copy.

B. Orientation - This setting refers to the direction in which the paper is loaded into the printer. Orientation can be set to portrait (vertical) or landscape (horizontal) depending on the type of document being printed.

D. Transparency - This setting is used when printing on transparency sheets. It adjusts the printer's settings to ensure that the transparency sheets are printed correctly.

In summary, the correct answer is C. Duplex because it allows the printer to print on both sides of the paper automatically.