Final answer:
It is b. false that all mail, including personal or confidential mail, should be opened when sorting. Only the intended recipient should open confidential mail to maintain privacy and avoid potential legal issues.
Step-by-step explanation:
When sorting mail, it is b. false that you should open all envelopes with a letter opener, including personal or confidential mail. Confidential mail should never be opened by anyone other than the intended recipient.
If you are tasked with sorting mail, proper protocol usually involves organizing and distributing the mail without opening it, particularly if it is marked personal or confidential. Doing otherwise could be a violation of privacy and could potentially have legal consequences.