From question 4, it is a question which people were interviewed, descriptive comments of their own, that their stress caused and said stress most often subject to learn. The family is rarely the problem.
The fourth question is descriptive questions. The interview was the comment of that. Cause of their stress. And most often replied. The tense The family is rarely a problem.
The question is a question 4 explanatory Which, who was interviewed for their opinion. Their stress arising from any cause, and most often said, the stress on the learning ส่วนเรื่อง family quite out of the question.