Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. Why does the speaker mention air-conditioning
A．It’s another possible use for seawater. B．It’s necessary for growing vegetables in hot climates. C．It’s used to cool water used for irrigation. D．It’s the primary use for electricity in the United States.