The sentence(s) given with blanks are to be filled with an appropriate word(s). Four alternatives are suggested for each question. For each question, choose the correct alternative and click the button corresponding to it.
The detective insisted _____ checking the evidence thoroughly.
Correct Option - 3
Here, the action of 'insisting' requires an appropriate preposition following it.
Option 1 is incorrect because we use 'with' when we want to associate two things / people with each other. Here, there is no such indication.
Option 2 is incorrect because the word 'from' is used to indicate origin (Eg: 'She is from Pune'), a time period (Eg: 'The classes will be held from Monday to Friday') or in the format 'From-to' (Eg: 'She travelled from Mexico to Canada'). Since there is no indication of a similar context in the given sentence, 'from' is incorrect.
Option 4 is incorrect because we generally use 'at' when we want to specify a time or location. Here, the word 'evidence' is a noun which does not indicate location. We would use 'at' if a location had been specified, such as: 'The detective insisted on checking the evidence at the police station'. Here, the noun 'evidence' is located at the police station and the preposition 'at' describes the same.
Option 3 is correct because the preposition 'on' is used whenever we use the verb 'insist'.
Hence the correct sentence is, 'The detective insisted on checking the evidence thoroughly'.