Correct Answer: D

Rationale: The correct answer is Vitamin K. Prolonged antibiotic use can disrupt the gut flora, which is responsible for synthesizing Vitamin K. This disruption can lead to a Vitamin K deficiency and an increased risk of bleeding. Vitamin A, B6, and C deficiencies are not typically associated with prolonged antibiotic use.

Correct Answer: C

Rationale: In catatonic schizophrenia, immobile posturing is a common clinical finding where the patient may maintain a rigid or bizarre posture for prolonged periods. Crying (Choice A) is not typically associated with catatonic schizophrenia. Self-mutilation (Choice B) is more commonly seen in conditions like borderline personality disorder. Repetitious activities (Choice D) are not a hallmark symptom of catatonic schizophrenia.

Correct Answer: A

Rationale: The correct answer is A. Roast beef is high in heme iron, which is best absorbed and helps treat iron deficiency anemia. Choices B, C, and D do not contain significant amounts of heme iron or other iron-rich foods that would be beneficial in managing iron deficiency anemia. Cheese pizza, scrambled eggs, bacon, white toast, corn flakes, and whole wheat toast do not provide the necessary heme iron needed to address the client's condition.

Correct Answer: C

Rationale: Ambulance exchange points are established when threats to air resources prevent evacuation by air from forward units. These points serve as locations where patients can be transferred between ground and air ambulances. Area support medical battalions (Choice A) refer to medical units that provide medical support to large areas and are not specifically related to evacuation. TOE units (Choice B) and field hospitals (Choice D) are not typically established in response to threats to air resources affecting evacuation.

Correct Answer: B

Rationale: The correct answer is B: Splenectomy. Splenectomy is the treatment of choice for hereditary spherocytosis as it helps prevent hemolysis and improve anemia. Removing the spleen reduces the destruction of the abnormal red blood cells. Choice A, Bone marrow transplant, is not a standard treatment for hereditary spherocytosis. Choice C, Frequent blood transfusions, may be used to manage anemia in some cases but is not the primary treatment for hereditary spherocytosis. Choice D, Liver biopsy, is not a treatment for hereditary spherocytosis; it is a procedure used to diagnose liver conditions, not related to this hematologic disorder.