Correct Answer: B

Rationale: The correct answer is B: 'Take this medication at the same time every day.' It is crucial to take levothyroxine at the same time each day to maintain consistent thyroid hormone levels. Choice A is incorrect because levothyroxine should be taken on an empty stomach, usually in the morning. Choice C is important but not specific to the administration of levothyroxine. Choice D is incorrect as antacids can interfere with the absorption of levothyroxine.

Correct Answer: D

Rationale: The correct answer is D. Montelukast should be taken daily in the evening for long-term control of asthma, rather than for immediate relief. Choice A is incorrect because montelukast is not used for acute asthma attacks. Choice B is incorrect as montelukast works by blocking leukotrienes, not by decreasing swelling and mucus production. Choice C is incorrect as montelukast is not specifically taken before exercise.

Correct Answer: C

Rationale: The correct instruction is to take ferrous sulfate on an empty stomach to increase absorption. This is because taking it with food or dairy products like milk can reduce its absorption. Orange juice is not recommended as it may interfere with the absorption of iron. Taking ferrous sulfate on an empty stomach may cause gastrointestinal upset, but this can be minimized by gradually increasing the dose.

Correct Answer: D

Rationale: The correct answer is D. Exercising for 30 minutes at least 5 days a week helps manage hypertension by promoting cardiovascular health. Statements A, B, and C are incorrect. Avoiding foods high in potassium is not necessary unless specifically advised by a healthcare provider. Checking blood pressure once a week is not frequent enough for effective monitoring. Increasing dairy product intake is not a recommended approach to managing hypertension.

Correct Answer: A

Rationale: The correct answer is A, Hypokalemia. Furosemide, a loop diuretic, commonly leads to potassium loss in the urine, causing hypokalemia. This electrolyte imbalance should be closely monitored in patients taking furosemide. Choices B, C, and D are incorrect because hypercalcemia, hyponatremia, and hyperkalemia are not typically associated with furosemide use.