A. This is not the best answer. Cochlear implants require surgery, language retraining, and counseling; thus they are a much more involved process than using hearing aids.
B. This is not the best answer. Presbyopia influences the lens to be thicker and less elastic, and it is unable to provide the necessary curve to focus on close objects.
C. This is the best answer. Safety from falls can be improved by solid footing, removal of barriers, good lighting, and handrails upon which aging people can depend in the event a person becomes unsteady.
D. This is not the best answer. Males and females experience two major differences: females begin to experience the climacteric earlier than males and experience complete loss of reproductive capacity.
E. This is not the best answer. Japanese women have a very different experience during menopause than do Americans, possibly due to physical, cultural, and dietary variation.