After over 21 years stay in South Africa, Gandhiji returned to India in ______.

1915

The correct answer is Option (1) → 1915

Mahatma Gandhi Returned From South Africa - [January 9, 1915] This Day in History. On 9 January 1915, Father of the Nation, M K Gandhi reached Bombay sailing from South Africa, having lived there for more than two decades. This date was chosen in 2003 to be observed as Pravasi Bharatiya Divas (Non-Resident Indian Day).