Definition: 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].
Input: A left-wing ‘super-union’ with almost 1.8million members could be created by a controversial merger of Labour’s biggest donor Unite and the biggest civil service union after the election, senior Conservatives fear. They warn that a merger between the Public and Commercial Services Union (PCS) and the Unite union would threaten the impartiality of Whitehall. Half of all civil servants are members of the PCS, which is not currently politically affiliated. If the two unions merged, they would effectively be subsumed into a union which is Labour’s biggest financial supporter. Unite, which has donated millions to Labour since Ed Miliband became leader of the party, could be set to merge with the Public and Commercial Services UnionMerger of Unite and PCS unions could threaten impartiality of WhitehallMPs warn it would make half of all civil servants members of 'super-union'Unite has donated £14.3million to Labour since Ed Miliband became leader 
 Question:PCS members apparently insisted they would not back a new relationship with _ if their union membership fees contributed to Labour Party coffers.

Unite