Assertion :Periodic abstinence is a method in which couples avoid from coitus from day 17 to 27 of menstrual cycle. Reason: Periodic abstinence is a very effective method and 100% sure of birth control.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Periodic abstinence is a natural method in which the couples avoid or abstain from coitus from day 10 to 17 of the menstrual cycle when ovulation could be expected. The effectiveness of this method is limited, because only a few women have regular menstrual cycle and the actual time of ovulation can be produced as the ovulation in humans occurs about 14 days before the onset of the next menstruation.
So, the correct answer is 'Both Assertion and Reason are incorrect'.

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