Answer: (Detailed Solution Below)
Option A: Varanasi
Detailed Solution:
The correct answer is “Varanasi”.
The 15th Pravasi Bharatiya Divas was organised in Varanasi, Uttar Pradesh from 21-23 January 2019. The theme of the three day long convention was "Role of Indian Diaspora in building New India". Hon'ble Prime Minister, Shri Narendra Modi inaugurate the convention on 22 January, 2019.