Birthplace of Guru Nanak known as Nankana Sahib today, was earlier called:

Rai Bhoi di Talvandi

The correct answer is Option 3- Rai Bhoi di Talvandi

Guru Nanak was born on April 15, 1469, in the village of Rai Bhoi di Talvandi, which is now known as Nankana Sahib, Pakistan. The village is located in the Sheikhupura district, to the west of Lahore.

The other options are incorrect. Roda is a village in the district of Moga, Punjab, India. Umarkot is a city in the Sindh province, Pakistan. Luni is a river in the Thar Desert, India.

The Gurdwara Janam Asthan in Nankana Sahib commemorates the site where Guru Nanak is believed to have been born. The gurdwara is a major pilgrimage site for Sikhs from all over the world.