If a user makes a mistake, should I prevent the action, or automatically resolve it

1. How should a system prevent users from making mistakes?
2. What will you do if you make a mistake in your task while working on a priority task?
3. When a user makes a mistake which of the following would they expect?

How should a system prevent users from making mistakes?

Prevent mistakes by helping the user to build a good mental model of your interface. Use design patterns that communicate how they work to users, encourage users to double-check their work (especially before deleting), and warn before mistakes are made.

What will you do if you make a mistake in your task while working on a priority task?

When you make a mistake at work, admit it and present a solution to your boss as quickly as possible. Focus on your role in the mistake—blaming others won't fix anything. If you can fix the mistake on your own time, then do so, but don't trigger overtime pay without first consulting your boss.

When a user makes a mistake which of the following would they expect?

When a user makes a mistake which of the following would they expect? An easily understood error message telling them how to solve the problem. A detailed error message which gives them detailed instructions on how they can avoid the error next time. A re-direction to another website where you will log in.