Correct Answer: C

Rationale: The correct answer is C because folic acid is essential for the production of red blood cells in adults and children, not just for pregnant women. Option A is incorrect as folic acid is not exclusive to pregnant women. Option B is incorrect as a balanced diet may not provide sufficient folic acid. Option D is incorrect since folic acid supplementation is also recommended for other reasons beyond deficiency.

Correct Answer: C

Rationale: The correct answer is C: Tingling of the extremities. Tingling is a common symptom of hypocalcemia, which is expected with low calcium levels after a thyroidectomy. Option A, shortened QT intervals, is associated with hypercalcemia rather than hypocalcemia. Option B, hypoactive deep tendon reflexes, is not typically related to hypocalcemia. Option D, constipation, is not a common finding associated with low calcium levels.

Correct Answer: D

Rationale: The correct answer is D, poor impulse control. Right hemisphere strokes commonly affect judgment and safety awareness, leading to poor impulse control. Choices A, B, and C are incorrect for this scenario. Deficits in the right visual field are associated with left hemisphere strokes, while the inability to discriminate words and letters is typically seen with left hemisphere damage. Motor retardation is more common in strokes affecting the motor areas of the brain, not specifically related to right hemisphere strokes.

Correct Answer: A

Rationale: The correct answer is A. Instructing the client to remain still once the gel pads are attached is crucial to obtaining accurate ECG readings. Choice B is incorrect as electrodes are typically placed on the chest, not the breast. Choice C is incorrect because the client should lie flat during an ECG, not sit up. Choice D is incorrect because the client should breathe normally, rather than holding their breath, throughout the procedure.

Correct Answer: D

Rationale: The correct answer is D because a client with a fractured femur and sudden chest pain may be experiencing a pulmonary embolism, which requires immediate assessment. Choice A is incorrect because although severe pain is present, it is more indicative of musculoskeletal issues related to urolithiasis rather than a life-threatening condition. Choice B, related to acute cholecystitis, is less urgent than choice D as the pain radiating to the right shoulder is a common symptom but does not indicate an immediate life-threatening situation. Choice C, regarding a client post-total knee arthroplasty with a pain level of 8, is important but not as urgent as a potential pulmonary embolism in choice D.