Answer:
they become sad like me get beat up everyday by parents and do studying all the time be lonely suicidal thoughts
Explanation:
I would say the correct answer is that has an undetermined answer.
If a subject has been thoroughly covered, then there is no need for this researcher to do it all over again. If it's impossible to answer, there is no need to try. If it can be answered easily, then it doesn't really require a research. This leaves us with the last option, because a researcher might want to try and determine the answer.
"If my house was burning down, and I had to rescue one thing that wasn't money or important documents, it would be my iPhone! Not only is it slim and lightweight, it never leaves my side and everything I need to accomplish can be done in a touch of a button. It is easier to name off things it cannot do!
I think your question is incomplete...