Periodic markets in rural areas are temporary, recurring marketplaces (weekly or biweekly) in villages. They cater to local needs by facilitating the sale of agricultural produce and household goods by villagers and small traders. These markets are transient, with gatherings occurring only on designated days.
Option A: Incorrect — quasi-urban centres are small towns, not periodic rural markets.
Option B: Correct — periodic markets take place on specific days in specific rural locations.
Option C: Incorrect — personal and professional services are restricted in such temporary settings.
Option D: Incorrect — vendors might source goods from various places, not exclusively wholesale markets.Therefore, the correct option is (B): These markets are held on specific days at different locations.