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: If you had planned to jet off today to catch the end of the Easter school break, you may just wish you had stayed at home. In a double hit for thousands of holidaymakers trying to leave Britain today, strikes by French air traffic controllers and new border control checks threaten severe delays. Air passengers face up to three days of disruption, with British Airways, easyJet, Ryanair and Flybe among the airlines forced to cancel dozens of flights. Scroll down for video Delays: easyJet is one of many airlines set to cancel flights over a strike by French air traffic controllers over the next three days (file photo)Strikes by French air traffic controllers will affect thousands of Brits todayNew border control checks may also mean major delays for holidaymakersBA, easyJet, Flybe and Ryanair among airlines forced to cancel flightsThree days of disruption start today at 5am and end on Friday morning 
 Question:BA warned of ‘significant disruption’ and apologised for the cancellation of around a dozen return flights from _.

Britain