From the given sentence, form a feminine noun from the masculine word given, by replacing it with another word:
Ram's uncle had served as a military officer in the British era. [Basic]The given sentence will have Option A, aunt, as the correct answer.
The given sentence has only one male gender noun and it is ‘uncle’. Ram, here is a proper noun, and thus cannot be converted though it is a male name; while officer is actually a common gender noun and can be used for both the genders.
Thus, ‘uncle’, when converted into feminine gender will become ‘aunt’, whereas the male noun counterparts for Mother, Daughter and Sister are Father, Son and Brother respectively, and none of three are present in the sentence.
Thus, Option A, Aunt, Is the correct answer.