Read the given passage and answer the questions that follow :-
The regulation of conception by preventive methods or devices to limit the number of off spring is called birth control or contraception. This basically prevent fertilization. An ideal contraceptive should be user friendly, easily available, effective and reversible with no or least side effects. It also should not interfere with the sexual drive, desire and the sexual act of the user.

The couples avoid coitus from day 10 to 17 of the menstrual cycle because ovulation are high during this period. What is this method of birth control called?

Periodic abstinence .

The correct answer is Option (1) – Periodic abstinence .

Periodic abstinence is a natural method of birth control in which the couples avoid or abstain from coitus from day 10 to 17 of the menstrual cycle when ovulation could be expected. As chances of fertilisation are very high during this period, it is called the fertile period. Therefore, by abstaining from coitus during this period, conception could be prevented.

Withdrawal or coitus interruptus is another method in which the male partner withdraws his penis from the vagina just before ejaculation so as to avoid insemination.