Which of the following medications is used as a bronchodilator?

Albuterol is recognized as a bronchodilator, meaning it is specifically formulated to relax and widen the air passages in the lungs, making it easier to breathe. This medication is often used in the treatment of conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other respiratory disorders characterized by bronchospasm. By alleviating constriction in the airway, albuterol enhances airflow and reduces respiratory distress.

Other medications listed—amiodarone, activated charcoal, and aspirin—do not serve the purpose of bronchodilation. Amiodarone is primarily an antiarrhythmic medication used in managing certain types of irregular heartbeats. Activated charcoal is utilized in cases of poisoning or overdose to absorb toxins and prevent them from entering the bloodstream. Aspirin is an anti-inflammatory and analgesic medication often used for pain relief, inflammation reduction, and in low doses for cardiovascular protection. Thus, the therapeutic use and mechanism of action of albuterol clearly establish its role as a bronchodilator, making it the correct choice.