Who is known as the 'best-ruler' of the Satavahana dynasty?

Gotami-Puta-Siri-Satakani

The correct answer is Option (3) → Gotami-Puta-Siri-Satakani

The best-known ruler of the Satavahana dynasty, Gotami-puta Siri-Satakani, claimed to be both a unique Brahmana (eka bamhana) and a destroyer of the pride of Kshatriyas. He also claimed to have ensured that there was no intermarriage amongst members of the four varnas. At the same time, he entered into a marriage alliance with the kin of Rudradaman.