Final answer:
Plumbing vents must terminate at least 10-feet from a window and 6 inches above the roof.
Step-by-step explanation:
The correct answer is a. 10-feet from window and 6" above roof. Plumbing vents are important components of a plumbing system, as they allow air to enter the system and prevent the build-up of pressure. To ensure proper functionality, plumbing vents must be positioned a certain distance away from windows and above the roof. The minimum requirement is to have the vent terminate at least 10 feet away from a window and 6 inches above the roof.