Change passive voice: She must learn this piece before her exam next Friday.

• ক This piece be learnt by her before her exam next Friday.
• খ This piece may be learnt by her before her exam next Friday.
• গ This piece can be learnt by her before her exam next Friday.
• ঘ This piece must be learnt by her before her exam next Friday. ✅ সঠিক উত্তর