💡 Detailed Explanation
'Kaette' is used when a result is the opposite of what was expected or intended. It's used in contexts like, 'I did A expecting a good outcome, but on the contrary, a bad outcome occurred.' Choice 1 correctly shows this, as taking a shortcut (expected to save time) resulted in the opposite outcome (taking more time). Choice 4 misuses 'kaette' where 'zehi' (by all means) would be appropriate.