【单选题】

Questions 18 to 20 are based on the following passage.At the end of the passage, you will be given 15 seconds to answer the questions.

Now, listen to the passage.
Nowadays, the situation has changed, ______.A．there are more opportunities and possibilities available
B．preparing for the future is quite an easy task
C．you don’t have to stay on the road while you are driving
D．people have more choices in terms of their career-choosing