According to life course theory, becoming pregnant as a teen increases if puberty is reached early life expectancy is lower than usual one is concerned about lineage survival all of the above

ccording to life course theory, becoming pregnant as a teen increases if all of the above conditions are present. Each factor can contribute to an increased likelihood of teenage pregnancy:<br /><br />1. **Puberty is reached early**: Early puberty can lead to earlier sexual activity and thus increase the chances of teenage pregnancy.<br /><br />2. **Life expectancy is lower than usual**: In environments where life expectancy is perceived to be lower, individuals may prioritize having children earlier in life.<br /><br />3. **One is concerned about lineage survival**: Concerns about lineage survival can motivate individuals to have children at a younger age to ensure the continuation of their family line.<br /><br />Therefore, the correct answer is "all of the above."