【正确答案】
C
【答案解析】[听力原文] Ukraine's Prime Minister Arseniy Yatsenyuk said Sunday he is resigning. His decision may permit a new government to be formed, possibly ending the country's political crisis. Yatsenyuk spoke on television and wrote on the social networking site Twitter. He said he will give his resignation to Parliament on Tuesday. He said he hopes his decision to leave office will permit Ukraine to make changes to its constitution and to its electoral and judicial systems He said he hopes the country can then join the European Union and the North Atlantic Treaty Organization. Yatsenyuk has been criticized for not being able to improve the country's economy and for not moving fast enough to make political changes. If members of Parliament are unable to choose a new prime minister, a new election could be held. But President Petro Poroshenko does not want another election. He believes a new vote could worsen the country's security situation. Question: What is the news report mainly about?