Final answer:
The inquiry is about chapter 12 of a technical document TC 21-305-20, in the context of Computers and Technology at the college level, though specific details of the chapter are not provided to give an accurate description.
Step-by-step explanation:
The question refers to TC 21-305-20, which is a technical document likely related to procedures or guidelines in a specific field. Since it is mentioned in conjunction with chapter 12 attributions by Deborah Gustlin & Zoe Gustlin, associated with the ASCCC Open Educational Resources Initiative and shared under a CC BY 4.0 license, it indicates that the question pertains to subject matter likely covered in a college-level course that could include elements of computer technology and digital resources. However, without further context, such as the full title of the document TC 21-305-20, it is challenging to provide a precise answer regarding the content of chapter 12 of this document.