Final answer:
Theft of film for silver content is a risk for the photography department because traditional film contains silver that can be extracted.
Step-by-step explanation:
Theft of film for its silver content is particularly a risk for the photography department or any department that handles photographic materials. Traditional photographic film contains silver halide crystals, which are sensitive to light. When the film is developed, these crystals are reduced to elemental silver, which can then be reclaimed. Photographers, especially those working with black and white film, experience the risk of theft as the emulsion on the used or unused film can be extracted for its silver content. While digital photography has reduced the use of traditional film, industries that still rely on traditional processes must take precautions against such theft.