What is the most common deficit associated with old age,in terms of sensory functioning

A)  gustatory discrimination 
B)  nearsightedness 
C)  tactile discrimination 
D)  farsightedness

Farsightedness, also known as presbyopia, is the most common deficit associated with old age in terms of sensory functioning. It occurs due to the hardening of the lens in the eye, making it difficult to focus on nearby objects. This usually begins in the early to mid-40s and progressively gets worse with age.