Final answer:
At a mass-casualty incident, burn patients without airway compromise and patients with multiple bone or joint injuries are marked with a yellow triage, signifying that they have serious, non-life-threatening injuries requiring eventual treatment.
Step-by-step explanation:
Burn patients without airway compromise and patients with multiple bone or joint injuries should be marked with a yellow triage at a mass-casualty incident. The color-coded triage system is used to prioritize treatment based on the severity of a patient's injuries. In a mass-casualty incident, a yellow tag indicates that a patient has serious injuries that are not life-threatening and that they require observation and eventual treatment, but their condition is not immediately critical, differentiating them from those marked red (immediate life-threatening injuries) or green (minor injuries).