Gregory is having surgery to move one of his testicles into the scrotum and stitch it into place. Which condition does he most likely have?

The surgery described moves a testicle into the scrotum and secures it there, a procedure used to treat an undescended testicle. The condition of having an undescended testicle is cryptorchidism, so the correct choice is D, cryptorchidism. Anorchism means absence of one or both testicles, while oligospermia refers to a low sperm count and phimosis involves a tight foreskin.

AI-written and checked against the verified answer.