The sentence that makes correct use of the structure: 'It + be + Adjective + of + N/P + Infinitive' is-

উত্তর জানতে একটি অপশন বেছে নাও 👇

• কIt is kind of him to support us.
• খIt is unwise of your going there.
• গIt is unusual of him to making such mistakes.
• ঘIt is nice of them that they waited for you.