Final answer:
In accordance with building codes, all openings into a drainage or vent system, except those openings to which plumbing fixtures are properly connected or that constitute vent terminals, must be permanently capped with a cap.
Step-by-step explanation:
In accordance with building codes, all openings into a drainage or vent system, except those openings to which plumbing fixtures are properly connected or that constitute vent terminals, shall be permanently plugged or capped with a cap.
A cap ensures that the opening is securely sealed, preventing any unwanted debris or gases from entering the system.
This helps to maintain the integrity and proper functioning of the drainage or vent system.