Explanation
- A
Adina Masjid – Mandu
(a) Adina Masjid – Mandu. Adina Mosque stands at Pandua (Hazrat Pandua) in Malda, Bengal, built by Sikandar Shah of the Ilyas Shahi line, not at Mandu in Malwa. That mismatch is the stored official key.
- B
Lal Darwaza Masjid – Jaunpur
(b) Lal Darwaza Masjid – Jaunpur. Lal Darwaza Mosque is a Sharqi building of Jaunpur under Hussain Shah, so the pair is correctly matched.
- C
Dakhil Darwaza – Gaour
(c) Dakhil Darwaza – Gaour. Dakhil Darwaza is the monumental brick gateway of Gaur (Gauda/Lakhnauti) in Bengal. The pair holds.
- D
Tin Darwaza – Ahmedabad
(d) Tin Darwaza – Ahmedabad. Teen Darwaza is Ahmad Shah’s triple gateway in Ahmedabad. The pair holds.
Summary. Official key is (a) Adina Masjid – Mandu. The question asks the incorrect pair: Adina belongs to Pandua, not Mandu. Mandu’s fame is Jahaz Mahal and Jami Masjid of the Malwa sultans. Lal Darwaza–Jaunpur, Dakhil–Gaur and Teen Darwaza–Ahmedabad stay correct. Neighbouring names are Sikandar Shah and Pandua.