Which of the following materials should be secured along with questioned documents during an investigation?

Securing materials such as computers, printers, seals, and writing instruments is essential during an investigation involving questioned documents because these items can provide crucial evidence regarding the authorship and authenticity of the documents.

For instance, computers may contain saved files, emails, or other digital information that can help establish a timeline or reveal intent. Printers might produce specific signatures or patterns that are compared against the questioned document. Writing instruments can also be linked to the handwriting found on the documents, offering insight into who created or altered them.

Securing these materials is part of a comprehensive approach to gathering evidence, ensuring that all potential sources of information are considered during the investigation. This holistic method strengthens the case by providing multiple lines of evidence that can corroborate or challenge findings related to the questioned documents.