A nurse is preparing to instill an otic suspension into an adult client's ear. Which of the following methods should the nurse plan to use?

A. Pull the auricle upward and outward: While pulling the auricle upward helps straighten the external auditory canal in adults, directing it outward does not fully align the canal’s natural S-shaped curve. Proper straightening requires a backward motion to allow the medication to flow toward the tympanic membrane effectively. B. Pull the auricle downward and backward: Pulling the auricle downward and backward is the technique used for children younger than 3 years of age. In young children, the ear canal is more horizontal, and this maneuver helps straighten it appropriately. This method is not correct for adults. C. Pull the auricle upward and backward: In adults, the external auditory canal curves upward and posteriorly. Pulling the auricle upward and backward straightens the canal, facilitating proper instillation of the medication and ensuring it reaches the intended area near the tympanic membrane. D. Pull the auricle downward and outward: This technique does not effectively straighten the adult ear canal. Incorrect positioning can result in medication pooling in the outer canal rather than reaching the deeper structures where therapeutic action is needed.