A sterilisation technique is
A) Loop
B) Diaphragm
C) Tubectomy
D) Cervical cap

Hint: Sterilization is a medical form of birth control in which a person is rendered incapable of reproducing. Surgical and non-surgical sterilisation procedures are available for both males and females.

Complete answer:
Temporary contraceptive methods, permanent contraceptive methods, and medical termination of pregnancy are the three primary forms of contraceptive methods.
Option A) Loop – is an incorrect answer because it is a temporary contraceptive method.
Option B) Diaphragm – is an incorrect answer because it is a temporary contraceptive method. A barrier contraceptive system is a diaphragm or cap. It is worn inside the vaginal canal and stops sperm from passing through the cervix (the entrance of our womb). We'll need to pair it with a sperm-killing gel (spermicide).
Option C) Tubectomy - is the correct answer because it is a permanent contraceptive method. Sterilization is a permanent and reliable method of birth control. In men, it's known as a vasectomy, and in women, it's known as a tubectomy. In males, a short section of vas deferens is removed. In females, a short segment of the fallopian tube is removed.
Option D) Cervical cap - is an incorrect answer because it is a temporary contraceptive method. The cervical cap is a contraceptive (birth control) system that keeps sperm out of the uterus. The cervical cap is a reusable, deep silicone cup that fits snugly over the cervix after being inserted into the vagina. The cervical cap is suction-held in place and has a strap for easy removal.

Hence, the correct answer is Tubectomy i.e, option ‘C’.

Note: Female sterilisation is a highly efficient method for avoiding pregnancy that is meant to be permanent. It is not, however, $100$ percent accurate. Women who have been sterilised have a small chance of becoming pregnant after the procedure: around $5$ out of $1,000$ women become pregnant within a year.