Answer to Question 1
C
Changes in gastrointestinal motility, such as constipation and diarrhea (response B), alter the time that medication travels through the intestine, which alters absorption amounts. Changes in gastric pH (decreasing acidity) decrease potential drug absorption (response A). Manufacturers have not reconfigured drugs to be suitable to a slower bowel (response D).
Answer to Question 2
C
The ability to hear high-frequency tones decreases with age. Response A is incorrect because hearing loss is common in elderly individuals. Response B is incorrect because hearing loss occurs more frequently in older men than in older women. Response D is incorrect because hearing aids that amplify sound are readily available.