Final answer:
Telestaff Passwords should be changed every year as a security measure to protect against unauthorized access.
Step-by-step explanation:
The correct answer is C) Year. Telestaff Passwords should be changed every year as a security measure to protect against unauthorized access. By changing passwords regularly, it reduces the risk of them being compromised and helps ensure the safety of sensitive information. For example, if a password is not changed regularly and someone obtains it, they may gain unauthorized access to an individual's personal or financial information.