Concept:A transaction file stores current changes or day-to-day updates made to records.Explanation:In file processing, a transaction file records recent activities such as additions, deletions, or modifications.These temporary changes are later used to update the permanent master file.Since the file reflects the movement or change in data over a period, it is commonly called a movement file.It is not a master file, reference file, or historical file because those serve different purposes.Answer:B. Movement file