Explanation
krishnamoorti rava is the answer supported by the established record relevant to this First in India question. The correct answer is esa. The reference list identifies esa. krishnamoorti rava with the distinction “rajyasabha ke first Deputy Chairperson” and records the associated detail as 1952. krishnamoorti rava is correct for the exact category stated. saradara baladeva sinha is incorrect because it belongs to another achievement or field. sarvapallee radhakrishnana is a valid name in Indian general knowledge, but it does not hold this precise record. niyogee is also incorrect because its post, year, event, institution, or milestone association is different. Therefore the answer field and correct index should point to option C, esa. For ‘Which option correctly identifies rajyasabha ke first Deputy Chairperson?’, esa. krishnamoorti rava matches the exact category stated in the stem. The alternatives saradara baladeva sinha, daॉ. niyogee belong to different achievements, periods or institutional roles. A reliable revision method is to record the pair ‘Which option correctly identifies rajyasabha ke first Deputy Chairperson? krishnamoorti rava’ together with its field and historical context.