Janapada is derived from Sanskrit 'jana' (people) and 'pada' (foot), referring to the territory where a tribe or group settled, forming ancient Indian realms, republics, and kingdoms each with distinct culture, language, and governance. The other options describe a sacrificial ground (yajna-bhumi), a hamlet, and a purely agricultural site — none of which captures the full political and social scope of a Janapada.

Archaeological findings from Janapada sites indicate that cotton was not grown during that period, as cotton cultivation became prevalent later, particularly during the Indus Valley Civilization. Rice, wheat, and mustard seeds have all been found at Janapada archaeological sites, confirming their cultivation for sustenance, trade, and both culinary and medicinal purposes.

Mahajanapadas were ancient Indian kingdoms or republics that had capital cities as administrative and political centers, and most were fortified to protect against invasions. Statement 3 is false — while smaller Mahajanapadas may have relied on temporary levies, larger and more powerful ones did maintain standing armies.

Pataliputra was the capital of the Maurya and Gupta empires and is not associated with the Janapadas, which were smaller pre-empire kingdoms and republics. Purana Qila links to ancient Indraprastha of the Mahabharata; Hastinapura was the capital of the Kuru Janapada; and Atranjikhera in Uttar Pradesh is an archaeological site linked to the Painted Grey Ware culture of the early Janapada period.