Explanation:

Fairs have been a significant part of traditional commerce in India for centuries, serving as key venues for trade, social interaction, and cultural activities. They are typically held on specific days and are known for a wide variety of goods, including handicrafts, textiles, and local produce. While other options like cooperative societies, Janata shops, and government shops are also forms of marketplaces, they are more structured and formalized compared to the traditional setting of fairs.