
Passage: Making more money can make people happier, at least to some extent. But new research shows that the reverse is also true, and happy people earn more money. Researchers at the University of London studied more than 10,000 Americans and found that those who were emotionally positive and more satisfied with their lives growing up also earned higher incomes when they reached the age of 29.
Question: Which of the followings best questions the above findings?
A. A.Young people who grow up in wealthier families tend to have a negative attitude towards life
B. B.In addition to emotion, professionalism and ability to work also have a direct impact on income levels
C. C.Most of the young people who are more satisfied with their lives are born in wealthier families and share a good professional background
D. D.The occupational distribution of the respondents should be compared
Answer: