She conceptualized that man, as an Open system is in constant interaction and transaction with a changing environment.

Correct Answer: A

Rationale: Callista Roy's Adaptation Model (1970s) frames humans as open systems, interacting with environments e.g., mood lifts with praise. Unlike Levin's conservation, Neuman's stressors, or Newman's expansion, Roy's focus on adaptation to stimuli like stress management guides nurses in dynamic, responsive care across settings.

Correct Answer: D

Rationale: Pulse pressure is systolic minus diastolic e.g., 120-80 = 40 mmHg showing arterial elasticity. Apical (heartbeats), cardiac (synonym), and pulse deficit (apex-radial gap) differ. Nurses calculate this e.g., hypertension for cardiovascular health, per hemodynamics.

Correct Answer: B

Rationale: The stethoscope bell auscultates low-frequency Korotkoff sounds e.g., tapping unlike diaphragm (high). Pulse +4 (bounding), +1 (weak), sound pitch (low) differ. Nurses use this e.g., bell for clarity, per technique.

Correct Answer: D

Rationale: Sugar isn't normal in urine e.g., glucosuria signals diabetes unlike urea (waste), sodium, potassium (electrolytes). Nurses test e.g., dipstick for abnormalities, per physiology.

Correct Answer: D

Rationale: Adrenals secrete cortisol, aldosterone, adrenaline e.g., stress, BP, fight-flight unlike insulin (pancreas). Nurses know e.g., Addison's for roles, per physiology.