[Solved] Which of the following is correct with respect to the design and use of business documents? A) Not all documents used for internal purposes need to be prenumbered. B) Documents should be designed for single purposes only to avoid confusion in their use. C) Documents should be designed to be understandable only by those who use them. D) Documents designed for external use must be prenumbered. Sputum Specimen: A sample of mucus coughed up from the lungs, collected for laboratory analysis to help diagnose respiratory diseases. Surgical Incision: A cut made through the skin and tissues during surgery to gain access to the area being operated on. Occult Blood: Refers to the presence of blood in the feces that is not visible to the naked eye, usually detected by chemical tests. Menstrual Cycle: The regular natural change that occurs in the female reproductive system, marking the preparation for potential pregnancy.