Correct answer: B. Baby Taj
Explanation: Itmad-ud-Daulah’s Tomb is a famous Mughal monument in Agra, Uttar Pradesh. It is often called the “Baby Taj” because its delicate white-marble appearance, fine inlay work, and decorative design remind people of the Taj Mahal. The name is a popular description, not the monument’s formal historical name.
To solve the question, match the monument with its well-known nickname. Itmad-ud-Daulah’s Tomb is associated with the phrase “Baby Taj,” so option B is correct. The other choices are not its established names: it is not known as the Taj of the Deccan, Black Taj, or Red Tomb. Its marble and pietra-dura decoration also help distinguish it from those alternatives.