In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

[Q]: (CNN) Hillary Clinton has advantages heading into the final stretch of the campaign that any presidential candidate would envy: a fleet of popular surrogates, a mountain of cash and an opponent who is often sidetracked by self-inflicted wounds. Yet the Democratic nominee enters this home stretch in a dead heat against Donald Trump, according to a CNN/ORC poll released Tuesday. The close contest heading into the fall underscores Clinton's vulnerabilities on trust and honesty -- and her need to summon a relentless and efficient ground game, even if many of her voters are fueled more by revulsion toward Trump than excitement about her.The 2016 race remains within the margin of error in the latest CNN/ORC pollClinton has started to be more aggressive against Donald Trump this week 
 Question:But the one way to put the race in reach for _, she said, "is to assume that it's out of reach."
[A]: Donald Trump


[Q]: (CNN) Foreign policy, increasingly, is what is happening around the world while the United States is making other plans. More than five months into Donald Trump's presidency, American adversaries and allies alike are adjusting to a new era in which Washington seeks its own idiosyncratic and unpredictable "America First" path. In Europe, Asia, and the Middle East, governments are assessing shifting US priorities and in some cases seeking alternative sources of leadership and partnership in the belief that America has stepped back. Trump's unpopularity abroad is forcing leaders to consider their own political positions, before getting too close to the American President -- even if they seek to preserve Washington's still vital global role as the guarantor of liberal market economics and democracy.American adversaries and allies alike are adjusting to a new eraTrump's unpopularity abroad is forcing leaders to consider their own political positions 
 Question:The Trump administration refutes the notion that it has downgraded American leadership, arguing that _'s foreign trips, flurry of meetings and frequent calls with foreign presidents and prime ministers shows intense engagement.
[A]: Donald Trump


[Q]: A Massachusetts police department was forced to pay a $500 Bitcoin ransom to hackers who encrypted vital records on their computer network. Tewksbury Police Department came under attack by criminals who infected their network with a form of Internet malware in December before demanding money to decrypt the files. The program called CryptoLocker infects through an e-mail and then scrambles the data on the computer. It caused police systems to be down between four and five days, according to Tewksbury Town Crier. Tewksbury Police Department (above) came under attack by hackers which encrypted their computers' files using a malware program called CryptoLocker. They were forced to pay a $500 in BitcoinransomTewksbury Police Department was attacked by criminals who infected their network with malware program called CryptoLockerCryptoLocker restricts access to infected computers and demands payment to recover filesPolice systems were down between four and five days, and ransom was paid in digital currency by cops in bid to not lose data forever 
 Question:_ is malware that is often installed on computers at the same time.
[A]:
CryptoLocker