Which of the following would not be classified as a knowledge work system?

A knowledge work system is designed to help knowledge workers create, use, and distribute knowledge and information. The correct answer, which is case-based reasoning, does not fit this classification because it is primarily a problem-solving approach rather than a system. Case-based reasoning relies on past cases to inform decisions and solutions to new problems but does not inherently provide tools for knowledge creation or distribution.

In contrast, computer-aided design, 3D visualization, and investment workstations are specific systems that facilitate the work of engineers, designers, and financial analysts, respectively. These systems are geared towards creating, manipulating, and presenting knowledge in their respective fields. Computer-aided design assists engineers and architects in creating detailed schematics; 3D visualization helps in representing complex data and models visually; and investment workstations provide financial professionals with the tools to analyze, track, and manage investments effectively. Each of these systems drives knowledge work by enhancing productivity and innovation in specialized domains.