Which of the following phases of Selye's General Adaptation Syndrome (GAS) reflects a nurse's ability to successfully perform duties during a prolonged period of stress lasting weeks to months without any indication of observable impairment?

A. Exhaustion phase. The exhaustion phase occurs when the body's ability to cope with stress is depleted, leading to physical and psychological impairments such as fatigue, burnout, and increased susceptibility to illness. This phase does not align with maintaining performance over an extended period. B. Alarm phase. The alarm phase is the initial reaction to stress, activating the sympathetic nervous system and triggering the "fight-or-flight" response. While it provides a short-term boost in alertness and energy, it is not sustainable for weeks to months without impairment. C. Resistance phase. The resistance phase allows the body to adapt to prolonged stress, maintaining homeostasis and function without significant observable impairment. During this phase, the individual continues to perform duties effectively despite ongoing stress. D. Adaptive phase. The General Adaptation Syndrome does not include an "adaptive phase." Adaptation occurs within the resistance phase, making this answer incorrect.