Which of the following is similar to personal cheques, but feasible for very…

the question asks for a payment method similar to personal cheques but feasible for very small transactions. E-cash (electronic cash or digital cash) mimics the properties of physical cash or paper cheques in a digital format. While writing a traditional personal cheque for extremely small amounts (micropayments) is highly impractical due to high processing overheads and bank fees, E-cash systems are specifically optimized to handle very small, low-overhead digital transactions efficiently over the internet.