The correct answer is: A. accident and claims data system.
An accident and claims data system is a computer system that stores information about accidents and claims. This information can be used to track trends, identify areas where there is a high risk of accidents, and develop safety programs.
A payroll system is a computer system that is used to track employee hours and pay. This information is used to generate paychecks and to report taxes to the government.
An employment control reporting system is a computer system that is used to track employee hiring, termination, and other changes in employment status. This information is used to comply with government regulations and to manage human resources.
A personnel activity reporting system is a computer system that is used to track employee training, performance, and other activities. This information is used to develop employee development plans and to assess employee performance.
None of the other options are correct because they are not systems that are commonly used to update accident files.