Question

jared has been an avid fan of rock music for many years and has attended numerous concerts, getting as close to the stage as possible. he has never worn earplugs or protective earwear. now in his 50s, he has become hard - of - hearing and can no longer detect quiet sounds or low talking. how might his symptoms be explained? multiple choice his tympanic membrane has hardened. his hair cells are permanently damaged and desensitized to loud sounds. he has developed a brain tumor that puts pressure on the vestibulocochlear nerve.

Explanation:

Exposure to loud rock - music at concerts without ear protection can damage the hair cells in the cochlea, leading to hearing loss and inability to detect quiet sounds. Tympanic membrane hardening is less likely in this context, and there is no indication of a brain tumor.

Answer:

B. His hair cells are permanently damaged and desensitized to loud sounds.