In India, the 'Antyodaya Diwas' is observed every year on September 25, to mark the birth anniversary of :

Pandit Deendayal Upadhyay

The correct answer is Option (3) - Pandit Deendayal Upadhyay

Every year, Antyodaya Diwas is celebrated in India on September 25 to mark the birth anniversary of Pt Deendayal Upadhyaya, who developed the concept of 'Integral Humanism'. He was the co-founder of Bharatiya Jana Sangh & an RSS thinker.