Final answer:
The urethra is the common passage for the urinary system and, in males, the reproductive system. It transports urine from the bladder to the outside of the body, and in males, also conveys semen.
Step-by-step explanation:
The common passage for fecal, urinary, and reproductive systems is the urethra. In individuals with XY chromosomes (anatomically male), the urethra serves as a shared conduit for both the urinary and reproductive systems, which means it carries urine as well as semen. The urinary system includes parts like the ureters, urinary bladder, and the urethra, where the urethra transports urine from the bladder to the outside of the body. In contrast to the male urethra, the female urethra is solely involved in urination.
Answering the question, the part of the male urogenital tract that is shared by the urinary and reproductive systems is the urethra (Option D). The properties of the urethra differ between males and females, with males having a longer urethra that also facilitates the passage of semen.