Correct Answer: 3 [North Zone]

Notes:
The Reserve Bank of India (RBI) witnessed a 22.27 per cent rise in the volume of complaints under various ombudsman schemes during April 2020-March 2021, at 4,04,143.
Chandigarh, Kanpur and Delhi got the maximum number of complaints and the North zone accounted for the maximum share of complaints (43.10 per cent) in 2020-21. It was followed by the West zone and the South zone. East zone continued to have the least share of complaints. ATM and debit cards, mobile banking and credit cards accounted for the most reasons of complaints.