When sending confidential information in an email .

Emails can be sent in confidential mode to prevent unauthorized access of the information sent

Explanation:

Emails can be sent in confidential mode to prevent unauthorized access of the information sent. The email can be sent in confidential mode only allowing forward, copy, print, and disabling download. In confidential mode, password and expiration date is needed to be set.

When sending confidential information in an email  warn the recipient that the mail contains confidential information by attaching the word "CONFIDENTIAL" either in the email header or the attachment's file name so that the recipient would open the mail in  secured environment.

c

explanation:

i think the answer is b.