Correct option is A
The correct answer is: (a) Megasthenes
Megasthenes was a Greek ambassador sent by Seleucus I Nicator to the court of Chandragupta Maurya, the founder of the Maurya Empire in India.
He visited Pataliputra (modern-day Patna) and provided detailed accounts of the Mauryan administration, society, economy, and geography in his famous work “Indica.”
Although the original text of Indica is lost, its fragments survive through later Greek and Roman writers like Strabo, Arrian, and Diodorus.
Megasthenes' Indica is one of the earliest foreign accounts of India.
He described the capital Pataliputra, its fortified walls, streets, and governance.
His writings highlight the efficiency of the Mauryan bureaucracy, system of espionage, and the absence of slavery (according to his observations).
He compared the Indian caste system to the Greek class structure, albeit with inaccuracies.
He also mentioned mythical creatures and animals, showing both factual and fictional elements.
Chandragupta had previously defeated Seleucus I, after which a peace treaty and alliance were formed.
Ptolemy: A Greek geographer and astronomer of the 2nd century CE, who mapped India but did not visit Chandragupta's court.
Strabo: A Roman geographer who quoted Megasthenes, but never visited India.
Pliny: A Roman author and naturalist; he wrote about India in Natural History but never personally visited it.