E-banking or Electronic Banking refers to delivering banking products and services through electronic channels such as the internet, mobile apps, or other digital networks.
It allows customers to access their accounts, transfer money, pay bills, open deposits, and manage finances from home or office without visiting the branch physically.
Services like ATMs, Internet Banking, Mobile Banking, and Digital Wallets are part of the broader concept of e-banking.
EFT (Electronic Funds Transfer) is one specific service under e-banking which enables the electronic transfer of money between banks.
ECS (Electronic Clearing Service) is also a system for bulk payments but is not a broad banking service delivery method by itself.
Therefore, the correct answer describing the entire concept of providing banking at home or office using technology is option (C) e-banking.