The correct option is C (a) vas deferens ; (b) fallopian tube
∙ Vasectomy and tubectomy are two permanent surgical methods of contraception in males and females, respectively.
∙ In males, a small portion of vas deferens (sperm ducts) is removed by surgical operation, and both ends are tied properly so as to avoid the passage of sperms. This method is called vasectomy.
∙ In females, a small portion of oviducts (fallopian tube) is removed by surgical operation , and the cut ends are tied. This prevent the entry of ovum into the oviducts. This method is called tubectomy.
Thus, these techniques prevent fertilisation and unwanted pregnancies.