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. The greatest challenge in delivering food to people who need it is to ______.
A．raise the resources and delivering food to poor people. B．convince people to contribute more food and money. C．help people improve their well-being over the long term. D．devote more energy to those who are still most at risk.