The results of a 2009 national survey revealed that more than of u. s. adolescents had seriously considered or attempted suicide in the last 12 months.

The correct answer is 14 percent. 

Suicide is the act of taking one's own life due to different factors that has affected one's life. These factors may include total embarrassment, bullying, depression, family or social problems. There is more than 40 million adolescents present in the United States of America and an estimated of 6 million has already considered or attempted suicide.

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