Ravikirti was the court poet of which of the following dynasty ruler?

Correct option is D

Ravikirti was the court poet of Chalukyas dynasty ruler.
 Ravikirti was the court poet of 'Pulakeshin II'. 
 Pulakeshin II was the most famous ruler of the Chalukya dynasty who reigned from 610 to 642 CE.
 The most notable military achievement of Pulakeshin II was his victory over the powerful emperor Harshavardhana, who ruled over much of Northern India.
 The famous Aihole inscription written in classical Sanskrit was composed by Ravikirti.