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: Three major supermarket chains are launching investigations into the firms that supply their apples after an undercover probe exposed the terrible conditions in which migrant employees live and work. Waitrose, Sainsbury’s and Marks & Spencer will look at how migrants are lured to Britain to pack apples for our supermarket shelves. It is alleged that their apple suppliers keep migrant workers on minimum pay, and housed in filthy caravans. Meanwhile, both Waitrose and Aldi have suspended fruit orders from the same apple packing plant exposed by a TV report, which is said to pack one in four apples for supermarkets in the UK.Probe reveals working and living environments for fruit packaging teamsClaims migrants sorting apples for major stores worked nearly non-stopVideo footage also appears to show staff's dirty, smelling living conditionsCheap labour told on hidden camera that they can be easily replaced if they don't work hard enough 
 Question:The workers – who are in the _ legally - are told they will be housed in luxury, yet an investigation found filth-encrusted toilets and showers, soiled, sodden carpets, and mould infested walls.

UK