When a fixture has an overflow, the waste must be arranged so that standing water in the fixture ___________ in the overflow when the stopper is closed.

The correct answer is that standing water in the fixture will not rise in the overflow when the stopper is closed. This means that the design and installation of the waste system must ensure that excess water is properly managed to prevent any overflow from occurring.

In practical terms, if standing water were to rise in the overflow while the stopper is closed, it could lead to potential backflow issues, overflows, and plumbing problems. Proper drainage design ensures that the water level remains stable and does not reach a point where it could spill or escape through the overflow channel. This reduces the risk of flooding and water damage, and maintains the functionality of the fixture, particularly when the stopper is in use.

In contrast, if standing water were to remain in the overflow or if it were to rise, it could create significant maintenance and health issues, making the waste arrangement ineffective and unsafe.