Answer:
a. True
Step-by-step explanation:
Client files should be kept securely in an environment that is safe while ensuring that its confidentiality is safeguarded against unauthorized people. Moreover, the files should not be accessible by other clients or personnel that are not authorized to do so.
The Principle of confidentiality in this scenario implies that client files are secured in a lockable cabinets or lockable room in order to avoid unauthorized use or disclosure which consists of either modifying the file or making copies.