Final answer:
In emergency situations, the perioperative nurse would anticipate using Type O-negative blood for a trauma patient who is untyped and uncross-matched. Option d.
Step-by-step explanation:
In emergency situations when there is no time for cross-matching to determine blood type, the perioperative nurse would anticipate using Type O-negative blood option d, for a trauma patient who is untyped and uncross-matched. Type O-negative blood is considered the universal donor because it lacks A and B antigens, which means it can be transfused to patients of any blood type without provoking an immune response. However, it's always preferable to cross-match a patient's blood before transfusing if possible.