In the questions given below, a part of the sentence is underlined. Below each sentence, some phrases are given which can substitute the underlined part of the sentence. Identify the phrase which can correctly substitute the underlined part of the sentence. If the sentence is correct, as it is, the answer should be 'no improvement is required'.

It was unbelievable, how a calm person like him could penetrate such a violent act on his neighbour

The correct answer is '2' i.e. perpetrate .

Key Points

• The word "perpetrate" is the correct choice in this context. It means to carry out or commit a harmful, illegal, or immoral act.
• The underlined phrase "penetrate such a violent act" is incorrect because the word "penetrate" does not fit the intended meaning of committing an act of violence.
• The correct verb to describe someone committing a violent act is "perpetrate."

Correct sentence: It was unbelievable, how a calm person like him could perpetrate such a violent act on his neighbour.

Additional Information

• "Perpetuate": Means to make something continue indefinitely, such as a tradition or idea. It is incorrect here as it does not convey the idea of committing a violent act.
• "Precipitate": Means to cause something to happen suddenly or unexpectedly. It does not fit the context of the sentence.
• "No improvement is required": This is incorrect because the original sentence uses the word "penetrate," which is a misfit in this context.