[Solved] What type of bowel preparation may be required before a sigmoidoscopy? A) Not consuming any solid food the day before the procedure B) Drinking only clear liquids the day before the procedure C) Taking a laxative the evening before the examination D) Performing cleansing enemas the day of the procedure E) All of the above GUI: Graphical User Interface, a human-computer interface that allows users to interact with electronic devices using graphical icons and visual indicators. Visible Objects: Items or entities that can be seen by the naked eye under normal lighting conditions. Complex Commands: Advanced or intricate instructions that are given to computers or software to perform specific operations. Open Source Software: Software with source code that anyone can inspect, modify, and enhance because it is publicly accessible.