The correct option is
D Prevents the movement of sperm into the urethra
Vasectomy is a surgical procedure for male sterilization or permanent contraception. During the procedure, the male vas deferens are cut and tied or sealed so as to prevent sperm from entering into the urethra and thereby prevent fertilization of a female through sexual intercourse. Thus the vasectomy prevents the sperms from reaching the oocyte.
So the correct option is ' prevents the movement of sperm into the urethra '.