Because it is for school related topics. Join a chat room that allows you to say as you wish. Like your mom would say: Their house, Their rules.
One should have the right tool in teaching.As one select a tool to know if it is formal or informal it will help someone to direct one's assessment toward children's interests. Hope this is the right answer and would be of help.
The answer is A.) Cartilage
Your answer will be A) reactive depression because it is the only one of the options that has something to do with stress/trauma
