The correct answer is Option 4- Mumtaz Mahal

Mumtaz Mahal was the third wife of Mughal emperor Shah Jahan, and the mother of his 14 children. She was a beloved wife and mother, and Shah Jahan was grief-stricken when she died in childbirth in 1631.

The Taj Mahal was built as a mausoleum for Mumtaz Mahal, and it is considered one of the most beautiful buildings in the world. It is a symbol of Shah Jahan's love for his wife, and it is a reminder of the Mughal Empire's golden age.