A survey shows that kids in UK are the unhappiest, though it is among the richest countries in the world．________, lots of money doesn't mean a happy childhood．

1. A.
   That is to say
2. B.
   As a result
3. C.
   For example
4. D.
   Above all

A survey shows that kids in UK are the unhappiest, though it is among the richest countries in the world. ________, lots of money doesn’t mean a happy childhood. 

A. As a result                                   B. That is to say

C. For example                                 D. Above all