单项选择题

In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question on ANSWER SHEET TWO.
Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions. Now listen to the interview. According to Joy Bauer, what is the key factor of success in dieting

A. The heavy weight.
B. The attention to health conditions.
C. The perfect plan.
D. The belief of one’s ability to do it.