The nurse is preparing a client with an acoustic neuroma for a magnetic resonance image (MRI). Which client complaint is life-threatening and should be reported to the healthcare provider immediately?

A. Right ear hearing loss. While significant, right ear hearing loss is not immediately life- threatening. B. Difficulty with balance. Balance issues may be concerning but are not typically indicative of a life-threatening condition. C. Intensifying headache. An intensifying headache can be a sign of increased intracranial pressure, which is a medical emergency and requires immediate attention. D. Facial numbness. Facial numbness can indicate nerve involvement but is not as immediately concerning as an intensifying headache, which could indicate a serious neurological issue such as bleeding or swelling in the brain.