Verified Answer :

pandamille

If strictly practiced, which of the following methods of birth control is 100 percent effective?

abstinence
No contraception is 100% effective against by abstinence ... ^^
There is even the risk the withdrawal.

The only method of birth control that is 100% effective is : abstinence

It's a simple logic. If you do not engage in sexual intercourse, there would be absolutely no way that the sperm could enter the womb

hope this helps

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