What are common examples of x-ray handing faults?

Scratches or fingerprints on the film are indeed common examples of x-ray handling faults. These physical imperfections can occur during the various stages of handling x-ray films, such as during exposure, processing, and storage. When a film is improperly handled, it can easily collect debris or be marred by physical contact, leading to scratches or fingerprints. These imperfections can obscure important diagnostic details in the resultant images and may result in the need for retaking images, which can increase exposure to radiation for the patient.

The other choices point to issues that may arise from different sources, such as exposure time, processing errors, or improper light handling, but scratches and fingerprints are distinctly related to the handling of the film itself, making this the most direct example of a fault occurring during the x-ray handling process.