The correct preposition here is "between," as it is used when referring to two people or things. The sentence talks about "Hari" and "Prakash," who are two people, so "between" is the most suitable choice.
Thus, the correct preposition is "between," making the sentence: "I sat down between Hari and Prakash."
Each question has a sentence that has an underlined part. Choose the option which rephrases the underlined part in the most appropriate manner in terms of grammar and usage.
In an attempt to boost their profits, many edible oil-producing companies have been engaging themselves in propaganda against commonly used oils and promoting exotic and expensive varieties of oils \(\underline{as\ more\ healthier\ options.} \)