Question

Assertion- periodic abstinence is a natural method where couples abstain from coitus.
Reason - coitus from days $5 - 10$ should be avoided because this is the time of ovulation.
A. Both assertion and reason are correct and reason is the correct explanation for assertion
B. Both assertion and reason are correct but reason is not the correct explanation for assertion
C. Assertion is correct but reason is incorrect
D. Both assertion and reasons are incorrect

Answer 1

Periodic abstinence, also known as fertility awareness, natural family planning, and the rhythm method, entails not having sexual intercourse on days of a woman's menstrual cycle when she might become pregnant or using a barrier method (such as a condom, diaphragm, or cervical cap) for birth control on those days. The idea behind this strategy is to avoid sexual activity around the time of ovulation, when the woman is at her most fertile. Ovulation normally occurs $14$ days before the next menstrual period begins.

Complete answer:
Option A: Periodic abstinence are a way of avoiding sexual activity around the time of ovulation, when the woman is most fertile. Ovulation normally occurs $14$ days before the next menstrual period begins.
So, option A is incorrect.
Option B: Natural contraception in the form of periodic abstinence is a sort of natural contraception. From the $10 - 17$ days of the menstrual cycle, couples do not engage in sexual activity. This is due to the fact that ovulation is predicted on these days, and the odds of becoming pregnant are extremely high.
So, option B is incorrect.
Option C: Periodic abstinence, is a natural method of contraception. Couples are recommended to refrain from coitus in this manner. This period usually lasts from the tenth to the seventeenth day of the menstrual cycle, a few days before and following ovulation. Because the odds of conception are extremely high at this time, it is known as the fertile period. Ovulation usually happens $14$ days before the start of the next menstrual cycle.
So, option C is correct.
Option D: Periodic abstinence is a natural contraception strategy in which couples avoid pregnancy by not having sexual contact during the ovulation period, which lasts from day $10 - 17$ of the menstrual cycle.
So, option D is incorrect.

Hence, Option C is the correct answer.

Note:
Periodic Abstinences are a method of avoiding sexual activity around ovulation, when a woman is most fertile. Ovulation usually happens $14$ days before the start of the next menstrual cycle. However, because menstrual cycles are not always predictable, the user will need to monitor the fertile phase over a long period of time. As a result, it is unreliable for women who have irregular periods or whose cycles have been disrupted by sickness, delivery, or perimenopause. The numerous methods for predicting the fertile period also necessitate thorough education, and unless a couple is very motivated and cooperative, abstaining from sexual intercourse during the fertile period may be difficult. The biggest benefit of this approach is that it has no negative consequences.