Policy: The factory' s safety inspector should not approve a new manufacturing process unless it has been used safely for more than a year at another factory or it will demonstrably increase safety at the factory. Application: The safety inspector should not approve the proposed new welding process, for it cannot be shown to increase safety at the factory. Which one of the following, if true, justifies the above application of the policy? ['The factory at which the new welding process was first introduced has had several problems associated with the process.', 'The safety inspector will not approve any new process that has not been used extensively elsewhere.', 'Some of the manufacturing processes currently in use at the factory are not demonstrably safer than the new welding process.', 'The proposed new welding process has not been used in any other factory.']