people in countries with tend to be happier

A) high incomes
B) low incomes
C) more civil liberties
D) high incomes and more civil liberties

My answer is B.

5 answers

I disagree.
I am guessing this one, because I can't find the answer on my book. Would it be D.
Yes, I think it's D. This article reports on the happiest countries in the world. They are in northern Europe which has both high incomes and more civil liberties.

http://edition.cnn.com/2013/09/09/business/earth-institute-world-happiness-rankings/index.html
thank you very much!
You're very welcome.