The Pallava King Who Destroyed Vatapi And Assumed The Title Of Vatapikonda Was :
Narasimhavarman I
The correct answer is (D)Narasimhavarman I.
Narasimhavarman I was a king of the Pallava dynasty who ruled South India from 630 to 668 AD.
Narasimhavarman I led his army along with his general Paranjothi and invaded Vatapi.
He successfully defeated and killed Chalukya king Pulakeshin II in 642 CE.