Concept:In email, bcc is an abbreviation used when sending copies of a message to one or more recipients.Explanation:The term bcc stands for Blind Carbon Copy.It is similar to cc, which stands for Carbon Copy, because both allow you to send copies of an email to other people.However, in bcc, the email addresses of the recipients are hidden from the other recipients.When bcc is used, the main recipient cannot see that a copy has also been sent to someone else.This is why the word “blind” is included in the term Blind Carbon Copy.Answer:C. Blind Carbon Copy