【单选题】

Passage 1

"Trend-benders"(反潮族)are people who try to bring old styles back to life, and they encourage people to make some changes in their lifestyles.
Trend-benders ride their bikes to work even though they can afford cars, and they write letters instead of e-mail and read paper books instead of e-books.
Some trend-benders want to raise awareness about their passion and encourage others to act in the same way. For them, "bend the trend" is a social movement that invites everyone to make a lifestyle change. For example,they example to work by bicycle instead of going by car,to reduce greenhouse gas emissions(排放). When it comes to reading,trend-benders have their own ideas. "Both paper books and e-books have their appeal. However the beauty and attraction of real books. I even like the smell!E-books lose something—just like the difference between enjoying video at home and seeing a movie in the theater. \
Why do some trend-benders travel to work by bicycle instead of going by car
A．Because they are concerned about environment protection.
Because they want to save money to buy a greenhouse.
C．Because they want to improve their physical health.
D．Because they are too young to afford cars.