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Vanessa has developed an iOS app for stockbrokers. She wants to use the principle of error prevention in designing interactions. Which of these instructions would you recommend? 1,. Provide just enough options to do a task, and no more.
2. Disable all functions that are not meaningful for an action.
3. Break up difficult tasks into small, easy steps.
4. Make the most common functions easy to locate.
5. Test the app and create fixes for likely mistakes.

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