The correct option is D 7th Century A.D.
The origin of Bhakti
movement in the Hindu religion is dated back to AD 7th Century. The
Bhakti movement believed in pure and complete devotion to the God and in this
movement different saints spread this message. It started in South India (in
the states of Tamil Nadu and Kerala) with the Nayanars and Alwars movement. Over
a period of time, the concept and the movement spread to different parts of
India through different saints.