Identify the terminal method used to prevent pregnancy is :

The correct answer is Option (2) → Sterilisation

A terminal method ends the possibility of any more pregnancies.

Option (1) Lactational amenorrhea — Incorrect. Absence of menstruation during intense breast-feeding works only for about six months after childbirth.

Option (2) Sterilisation — Correct. Vasectomy in men and tubectomy in women block the transport of gametes.

Option (3) Intra Uterine Device — Incorrect. An IUD can be removed when a child is wanted; it is for spacing.

Option (4) Periodic abstinence — Incorrect. Avoiding intercourse on days 10–17 is a temporary natural method.

NCERT Extract:
Population Stabilisation and Birth Control – “… Surgical methods, also called sterilisation, are generally advised for the male/female partner as a terminal method to prevent any more pregnancies. Surgical intervention blocks gamete transport and thereby prevent conception. Sterilisation procedure in the male is called ‘vasectomy’ and that in the female, ‘tubectomy’. In vasectomy, a small part of the vas deferens is removed or tied up through a small incision on the scrotum (Figure 3.4a) whereas in tubectomy, a small part of the fallopian tube is removed (Figure 3.4b) or tied up through a small incision in the abdomen or through vagina. These techniques are highly effective but their reversibility is very poor.”