【单选题】

In this section, you will hear several news items. Listen to them carefully and then answer the questions that follow.

Questions 21 to 24 are based on the following news.At the end of the news item, you will be given 10 seconds to answer the questions. Now, listen to the news.
The purpose for theComfort to go to Haiti is _______.A．to help prevent further earthquakes
B．to treat survivors of the earthquake
C．to build a hospital there
D．to find survivors of the earthquake