Final answer:
A potential complication for a client with aplastic anemia would be a low WBC count, such as 2,000 cells per microliter.
Step-by-step explanation:
Aplastic anemia is a condition characterized by deficient numbers of red blood cell (RBC) stem cells. It can be triggered by various factors, including radiation, medication, chemotherapy, and infection. When a nurse reviews the laboratory results of a client with aplastic anemia, a potential complication would be a low white blood cell (WBC) count. A normal WBC count typically ranges between 4,000 and 11,000 cells per microliter. Therefore, out of the given options, a WBC count of 2,000 would indicate a potential complication in a client with aplastic anemia as it falls below the normal range.