Final answer:
The correct answer is D) printing a document. Sharing flash drives, downloading video files from peer-to-peer sites, and downloading or running an e-mail attachment file can infect your computer with a virus.
Step-by-step explanation:
The correct answer is D) printing a document. Printing a document generally does not pose a risk of infecting your computer with a virus. However, it is still important to exercise caution and ensure that the document you are printing is from a trusted source and does not contain any malicious code.
A) Sharing flash drives, B) downloading video files from peer-to-peer sites, and C) downloading or running an e-mail attachment file are all activities that can potentially infect your computer with a virus. Flash drives can carry infected files, downloading video files from peer-to-peer sites exposes your computer to possible malware, and e-mail attachments can contain viruses.