题目选项分析

In order to combat Carville's rampant homeless problem, Mayor Bloomfield recently proposed a ban on sleeping outdoors in the city's many parks. He claims that such a measure will force the homeless to either leave Carville or to find means other than sleeping in public parks.

Which of the following, if true, suggests that Mayor Bloomfield's plan will be successful?

【选项】The percent of Carville's population that has been homeless has been slowly decreasing in the last five years.