Final answer:
The correct answer to the question is a requirement, as glazing in various types of doors is typically mandated by building codes for safety reasons.
Step-by-step explanation:
Glazing in all fixed and operable panels of swinging, sliding, and bi-fold doors is a standard safety measure and a part of building codes in many jurisdictions. So, when the question asks, "Glazing in all fixed and operable panels of swinging, sliding and bi-fold doors shall be considered a ____ ____." The correct answer would be a requirement. This is because building codes generally mandate glazing in these types of doors to ensure the safety of the occupants, by using a type of glass that minimizes the risk of injury if it's broken. This kind of safety glass is designed to break in a way that prevents sharp, dangerous shards that could cause serious injury.