Final answer:
The correct term for materials, fixtures, or devices used in the construction of plumbing and drainage systems is "approved". These must meet recognized safety and functionality standards and comply with building codes.
Thus the corret opction is:1
Step-by-step explanation:
All materials, fixtures, or devices used or entering into the construction of plumbing and drainage systems shall be listed as approved.
This means that these components should meet the relevant standards and regulations for safety and functionality before being utilized in any construction project.
In the field of plumbing and construction, such approvals are typically issued by recognized standardization bodies or governmental agencies after thorough testing and evaluation to ensure they are fit for use and comply with the building codes.
The term "approved" is key in ensuring that the installed systems will be reliable, safe, and up to code.