Aaron,who Is Now 48 Years Old,has Noticed That He Needs

Aaron,who is now 48 years old,has noticed that he needs to add a lot more spice to his foods to be able to really taste their flavor.According to your text,the best explanation for Aaron's observation is

A) an increase in the number of his olfactory cells.
B) a decrease in the sensitivity of his taste buds.
C) social pressure to eat spicier foods.
D) presbycusis.