Question

In the following question, a sentence is given with a phrase highlighted in bold. Find out the phrase, among the phrases (a, b, c,
d) given below each sentence, which should replace the phrase printed in bold to make the sentence grammatically correct. If the sentence is already correct, mark (5),
i.e. 'No correction required', as the answer. My correspondents, mostly strangers, were polite but insistent; they wanted my take on a theory, newly circulating online, that offered a resolution to one of the most allurement digital mysteries of the past decade, the real identity (or identities) behind the persona of Satoshi Nakamoto.

Q: Answer-In the following question, a sentence is given with a phrase highlighted in bold. Find out the phras...

In the given sentence, Most which is an adverb must be placed before a verb, adjective or adverb to modify it. So, use of word allurement, which is a noun, is incorrect in the highlighted part of the sentence. In option a use of allures, which is a plural noun, is grammatically incorrect in the sentence. In option b use of must is not an appropriate choice. Option c one of the most alluring is grammatically as well as contextually fit. In option d use of off makes the sentence meaningless. Therefore, the correct answer is c.