What have become de rigueur for computer-based products and systems of every type ?
Correct answer: A. GUIs
- A. GUIs
- B. Candidate keys
- C. Object model
- D. All of the mentioned
Explanation
Graphical user interfaces have become standard for most modern computer-based products because they provide familiar visual interaction. Candidate keys and object models are internal design concepts, not universal product features.
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