Correct Usage of "Oneself" with the Subject "One"
Step 1: Understanding the Rule
The subject "one" refers to a general person, and when using a reflexive pronoun, it should be "oneself."
Step 2: Applying the Rule
The correct sentence should be:
"One should keep oneself ready for emergency."
Step 3: Eliminating Incorrect Options
- Using "himself/herself" would be incorrect because the subject is "one," not "he" or "she."
- The reflexive pronoun "oneself" correctly matches the subject "one."
Final Answer:
Thus, the correct answer is (C) "One should keep oneself ready for emergency."