The antonym of ‘indifference’ is-

✅ কেন সঠিক: ‘Indifference’ means lack of interest or feeling (উদাসীনতা). Its strongest opposite is ‘ardour’, meaning great enthusiasm or passion (উৎসাহ, আবেগ).

❌ অন্য অপশন: ‘Concern’ (উদ্বেগ, আগ্রহ) is also somewhat opposite, but ‘ardour’ is the fullest contrast to indifference; compassion means pity and anxiety means worry.

💡 মনে রাখুন: indifference ↔ ardour/enthusiasm; indifferent = উদাসীন.