Respuesta :
Answer: The correct answer for the fill in the blank is- D) Urogenital.
Urinogenital system is the organ system that comprises of reproductive system and the urinary system. They are grouped together under this system due to their close proximity.
Penis and testicles are the reproductive organs in the male reproductive system whereas vagina and mammary glands are included in the female reproductive system.
Thus, option D) is the right answer.
