What does "cc" at the bottom of letters represent?

The abbreviation "cc" at the bottom of letters stands for "Carbon Copy." This term originates from the use of carbon paper in the past, where an extra sheet of paper was placed behind the original document to create an additional copy as the original was being written or typed. When a letter includes "cc," it indicates that the individuals listed will receive copies of the correspondence, with the primary recipient being aware of who else is receiving the document. This practice is still widely used in business communication today to maintain transparency and keep relevant parties informed.

The other terms listed do not correctly represent the meaning of "cc" in this context. Each alternative suggests a different process or concept that does not align with the standard usage of the term in correspondence.