What is the most frequent cause for suicide in adolescents?

Feelings of alienation or isolation are the most frequent cause for suicide in adolescents. Adolescents may experience a gradual isolation leading to a loss of meaningful social contacts, which can be self-imposed or result from an inability to express feelings. During this developmental stage, achieving a sense of identity and peer acceptance is crucial. Choices A, B, and C are incorrect: Progressive failure to adapt, feelings of anger or hostility, and reunion wish or fantasy are not typically identified as the primary cause of suicide in adolescents.