Which of the following signs is most commonly associated with respiratory alkalosis?

The correct answer is D: Rapid, shallow breathing and feelings of panic. In respiratory alkalosis, the body eliminates too much carbon dioxide through rapid breathing, leading to a decrease in carbon dioxide levels. This results in symptoms like rapid, shallow breathing and feelings of panic due to changes in the blood pH. Muscle weakness and confusion (A) are more commonly associated with hypercalcemia. Decreased deep tendon reflexes and hypotension (B) are seen in hypokalemia. Bradycardia and decreased respiratory rate (C) are indicative of respiratory acidosis. Therefore, the most common signs of respiratory alkalosis are rapid, shallow breathing and feelings of panic.