A long-established practice that may be challenged if it violates bylaws.

• A. Custom
• B. Decorum
• C. Deliberative assembly
• D. Delegate

Answer: (A)

In parliamentary procedure, a Custom is a long-established practice that isn’t written into the bylaws or standing rules, but it can be challenged or set aside if it conflicts with those rules. Customs fill in how things are done in everyday operation, guiding behavior and procedures as long as they don’t contradict the formal rules. If a custom clashes with bylaws, the bylaws take precedence and the custom may be discarded or changed. This description matches Custom because it highlights a tradition built up over time that remains subordinate to written rules. Decorum refers to proper conduct, the deliberative assembly is the body that uses rules to conduct business, and a delegate is a person chosen to represent others, none of which describe a long-standing, rule-subordinate practice.