A supervisor writes: “Deliver 120 units to Gate 3 by 4 p.m. on 17 June.” Which of the seven Cs of business communication does the message best illustrate?

Concreteness means using specific facts, figures and dates rather than vague or general statements; the exact quantity, place and time make this message concrete. Completeness concerns whether all the information the reader needs is included, which is a different quality from being specific and definite.