Nocturnal erections in late adulthood _______.

A) increase in frequency
B) indicate an abnormal enlargement of the prostate gland
C) disappear as part of the normal aging process
D) diminish in intensity and duration

Nocturnal Erections

The phenomenon where a male experiences an erection naturally during sleep, often during the REM cycle.

Prostate Gland

A gland in the male reproductive system that produces and secretes some of the fluid found in semen, situated below the bladder and surrounding the urethra.