Select the most appropriate meaning of the given idiom. “A hard nut to crack”Aa simple problemBan interesting problemCa difficult problemDa crackable situationAnswer: C. a difficult problem Read Explanation: A hard nut to crack - ബുദ്ധിമിട്ടിക്കുന്ന ചോദ്യം - a person or thing that is difficult to deal with, understand, or influenceRead more in App