Hint: Surgical operation is a type of process which involves the removal of the uterus, ovaries or the other parts of the reproductive system of the women. Female sterilisation is a surgical process which gives permanent contraception for women who do not want any more children. It is a safe and simple surgical process.
-Vasectomy: It is a process in which a small part of the vas deferens is removed or tied up through a small incision on the scrotum. It is the principal method of sterilization in male. Due to this process, the sperm produced in the testis cannot reach the outer portion.
-Prostatectomy: It is the process in which all the parts of the prostate glands are removed. This operation is done for benign conditions that cause urinary retention and also for prostate cancer and other cancers of the pelvis. A radical prostatectomy can be performed due to cancer.
-Tubectomy: It is the process in which a small part of the fallopian tube is removed or tied up through the small incision in the abdomen or through the vagina. It prevents the eggs from reaching the uterus for implantation. It is an effective method for permanent birth control.
Hence, the correct answer is C.
Note: Tubectomy is also known as tubal ligation and it can be done when the mother is being recovered from the vaginal childbirth. The reversibility of this procedure is very poor.