The correct option is C Vas deferens
The image given in the question depicts the male reproductive system in which the vas deferens is tied and cut. This is a surgical method of contraception in males which is called vasectomy.
Male reproductive system consists of the following accessory ducts : rete testis → vasa efferentia → epididymis → vas deferens →urethra.
The accessory ducts are connected to each other and help in the transport of sperms from the testes to the exterior.
Vas deferens connects the epididymis to urethra. Thus, vasectomy prevents the sperms from reaching the urethra during ejaculation of semen.