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The ansewer is d. I don't really wanna explain it but I need more letters to post answer :)
<span>A heart attack happens when one or more of your coronary arteries become blocked.</span>
Abstinence is the most effective method of preventing STDs and pregnancy. In any sexual education courses, abstinence is the most suggested form of preventing these things from happening. When a person consciously chooses to make this decision it will always lead for the better good. Some religious groups also practice this method. This is not to deprive a natural human need, but rather to instill a value in individuals, especially the young ones, that there is really no rush to be doing this and the right time will always be waiting.