Correct Option: C

Sangam period is the period in the history of ancient southern India (known as the Tamilakam) spanning from c. 30th century BC to c. 4th century CE. It is named after the famous Sangam academies of poets and scholars centered in the city of Madurai. In old Tamil language, the term Tamilakam referred to the whole of the ancient Tamil-speaking area, corresponding roughly to the present-day Indian states of Tamil Nadu, Kerala, parts of Andhra Pradesh, parts of Karnataka and northern Sri Lanka.