The correct answer is **Smooth** (Option 4). **Comprehensive Derivation:** The correct answer is 'Smooth'. Explanation & Key Takeaways: • The term 'Baffle' in English refers to the act of confusing or puzzling someone. ("भ्रमित करना") • Example: The cryptic clues can baffle even the most experienced puzzle solvers. • 'Smooth' on the other hand refers to unimpeded progress or functioning, it indicates everything going as planned without any confusion or obstructions. ("सुचारु") • Example: The meeting went smooth without any misunderstandings. Therefore, the correct answer is 'Option 4'. Related Concepts: • 'Encourage' means giving support, confidence or hope to someone. ("प्रोत्साहित करना") • 'Happy' refers to the feeling of enjoyment, satisfaction, or wellbeing. ("खुश") • 'Ignorance' refers to the lack of knowledge, understanding, or awareness about something. ("अज्ञान") **Option Elimination:** • **Option 1 (Encourage)**: Incorrect distractor. • **Option 2 (Happy)**: Incorrect distractor. • **Option 3 (Ignorance)**: Incorrect distractor. • **Option 4 (Smooth)**: Correct Answer; accurate according to canonical reference. **Exam Trap:** Be careful of misleading distractors and subtle terminology differences. Verify core properties before selecting your answer. **Memory Booster:** Core mnemonic rule: Smooth corresponds to Option (4).