The placenta develops within the first couple of weeks of pregnancy. The placenta is the lifeline of the fetal body and soon after the placenta is developed and in place, it begins starting to absorb nutrients for the developing fetus. This all occurs in the first trimester.
Answer: D
Explanation: uhm its pretty easy
Ibeleive the answer is bullying because younger kids get bullied and even sometimes adults but teenegers get bullied the most by other teenagers which causes stress and other issues.
sorry if its wrong
