Yesterday’s strike caused the most confusion for ______.

More than 100,000 miners, railway workers and London bus drivers staged a one-day strike yesterday, (25[B]) creating chaos for British travelers on the worst day of industrial unrest for years.
   (27[B]) The first strike in the railway industry lasted for four hours, in protest of proposed job cuts, and is expected to the whole network on the busiest day of the week for train travel. The bus strike will worsen Londoners’ misery.
   (26[C]) Bus drivers are protesting against new job practices and pay cuts as the bus system prepares ior privatization.
   Police saw chaos on the roads as commuters attempted to get to work by car. Hundreds of thousands of people were expected to stay at home to avoid the crush, likely to be made worse by bad weather. About 2 million people travel into London every day and most of them use public transport.