A nurse is performing Weber's test for a client who has hearing loss. Which of the following actions should the nurse take?

A. Place a vibrating tuning fork against the midline vertex of the client's head: The Weber test is performed by placing a vibrating tuning fork on the midline of the client's forehead or vertex of the head. This tests for lateralization of sound, helping to distinguish between conductive and sensorineural hearing loss based on which ear hears the sound louder. B. Have the client repeat a phrase spoken by the nurse while the nurse's mouth is hidden: This action refers to the "speech discrimination test" rather than the Weber test. It is not part of the Weber test, which is specifically used to assess the lateralization of sound. C. Whisper words for the client to identify: This refers to a different hearing test, called the "whisper test," used to assess hearing ability, not the Weber test. The Weber test specifically uses a tuning fork to assess how sound is heard by the client. D. Ask the client to occlude one ear with a finger: While blocking one ear can be used in other tests (like Rinne's test), it is not necessary for the Weber test, which involves placing the tuning fork in the center of the head.