Final answer:
Passwords should be stored securely to prevent unauthorized access, either using a password manager or by keeping physical copies in a locked cabinet. The correct option is D.
Step-by-step explanation:
The item that must be stored out of sight and in a locked cabinet is D. Passwords. It is essential to prioritize the security of sensitive information and access credentials. Passwords are the gateway to accessing personal and organizational data, and hence they need to be secured both digitally and physically.
For example, if passwords are written down or printed, they should be kept in a secure location like a locked cabinet to prevent unauthorized access. It's also good practice to use a password manager to store and encrypt passwords digitally, reducing the need to have physical copies susceptible to loss or theft. The correct option is D.