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Sentence improvement – confusing words: Replace the wrong verb in '… could penetrate such a mindless act …' with the correct verb meaning 'commit an offense'.

Difficulty: Easy

perpetuate
perpetrate
precipitate
No improvement

Correct Answer: perpetrate

Explanation:

Given data

Faulty: '… could penetrate such a mindless act …'

Concept/Approach
Perpetrate means 'to carry out or commit (a harmful, illegal, or immoral action)'. 'Penetrate' = 'pass into/through' (wrong meaning). 'Perpetuate' = 'make something continue indefinitely' (also wrong). 'Precipitate' = 'cause suddenly' (does not collocate with 'act' in this sense).

Improved sentence
'No one could explain how a calm and balanced person like him could perpetrate such a mindless act on his friends.'

Final Answer
perpetrate

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