参考答案：B

解析：

[听力原文] Taking her first step towards running for the White House next year, Hilary Clinton was confident to victory. "I am in to win." she wrote on her website. The former First Lady and New York senator today set up an exploratory committee, allowing her to raise money and hire staff for a full presidential bid. But while she is the front runner for the democratic nomination, she faces strong competition, as Keme Nzerem reports from Washington. [难点] 本题难度不大，但是要注意题干要求的是不正确的说法。从“The former First Lady and New York senator today set up an exploratory committee.”这一句就可以确定选项a和 d是正确的说法。而根据“But while she is the front runner for the democratic nomination.”则可以确定选项c为正确的说法。本题如果有相关的背景知识，甚至不用听材料就可以得出答案。