Choose the word which is opposite in the meaning of following word.
'Plenty'

The correct answer is Option B (Scarcity).

Key Points:
• Concept: Antonyms (Words opposite in meaning).
• Explanation: 'Plenty' means a large or sufficient amount, abundance. 'Scarcity' means the state of being in short supply or shortage. Thus, 'Scarcity' is the exact antonym of 'Plenty'.
• Other Options:
• 'Private' is opposite to public.
• 'Chief' means main or leader.
• 'Lower' is opposite to upper/higher.
• Official Key: Option 2 ('Scarcity') is the officially confirmed answer.
• Key Takeaway: Remember: 'Plenty' (abundance) is the direct antonym of 'Scarcity' (shortage).