Correct Usage of the Reflexive Pronoun "Oneself"
Step 1: Understanding the Rule
The correct reflexive pronoun for "one" is "oneself", ensuring grammatical correctness.
Step 2: Choosing the Correct Sentence Structure
The correct sentence is:
"One should keep oneself prepared."
Step 3: Eliminating Incorrect Options
- "Should kept" (Option B): Incorrect; "should" is always followed by the base form of the verb.
- "Should be keeping" (Option C): Incorrect; continuous tense is unnecessary in this context.
- "Himself to herself" (Option D): Incorrect; inconsistent pronoun usage.
Final Answer:
Thus, the correct answer is Option A ("One should keep oneself prepared").