Answer to Question 1
C
Ototoxic medications, such as analgesics, antibiotics (such as vancomycin and aminoglycosides), or diuretics, affect hearing acuity, balance, or both, with the most common symptom being tin-nitus (ringing in the ears).
Answer to Question 2
B
Olfactory changes begin around age 50 and include a loss of cells in the olfactory bulb of the brain and a decrease in the number of sensory cells in the nasal lining. Reduced sensitivity to odors is common.