—Wow, I’ve really gained a lot of weight, I should start exercising.
—() . That’s why I finally decided to join a health club.

A．which encourages free trade at home and abroad
B．where people’s chief concern is how to make money
C．where all businesses are managed scientifically
D．which normally works according to the federal budget

A．to keep track of people who tended to forget things
B．to report their embarrassing lapses at random
C．to analyze their awkward experiences scientifically
D．to keep a record of what they did unintentionally