In a transportation company, a certain syndrome often attributed to stress by medical experts afflicts a significantly higher percentage of workers in Department F than in any other department. We can conclude, ttherefore, that the work done in Department F subjects workers to higher stress levels than does the work in the other departments in the company. Which one of the following, if true, most helps to support the argrument? ['Some experts believe that the syndrome can be caused by various factors, only one of which is high stress.', 'Job-related stress has been the most frequently cited cause for dissatisfaction among workers at the company.', 'Many workers who transfer into Department F from elsewhere in the company soon begin to develop the syndrome.', 'Department F has more employees than any other department in the company.']