Choose the correct sentence

One should do one’s duty is correct using one’s to match the singular pronoun one. This question tests pronoun agreement knowledge. Her and his assume specific genders not fitting the neutral one. Understanding pronoun consistency ensures grammatical accuracy. One’s is standard in formal English for indefinite subjects. Correct usage clarifies responsibility in writing or speech. This construction is common in instructional or ethical contexts. Knowing one’s enhances sentence precision vital for professional or academic communication ensuring clarity in expressing obligations or duties in essays reports or formal discussions.