阅读下面材料，从每题所给的三个选项（A、B和C）中，选出最佳选项。
As we know, Chongqing has changed a lot in the past few years. More and more trees are being planted in the city. And every day you can see many old people play sports everywhere. The changes make people in the city live a happy life. A small survey below is from people in Chongqing. One hundred persons answered the questions last week.

What they want	Health	Safety	Food
52%	33%	15%
Where they like to live	In a quieter place	In a busier place	In a greener place
15%	5%	80%
What they think of working in the city	Bad	Good	No idea
8%	80%	12%
Whether they plan to change their living places	Yes	No	Difficult to say
39%	41%	20%

From the survey, ________ of the people in Chongqing care about health.
A. 41%       B. 80%   C. 52%
From the survey, we know most people want to live________.
A. in a busier place
B. in a quieter place
C. in a greener place
Most people think working in Chongqing is_________.
A. bad   B. good   C. hard
Every day people in Chongqing can see________ play sports everywhere.
A. the young   B. the old   C. the men
According to the passage and the survey, we know that________ .
A.the changes in Chongqing makes people enjoy living there
B. 12% people in Chongqing think working in the city is bad
C. 33% people in Chongqing care about the food