Concept:Internet banking refers to carrying out banking services over the internet by using computer networks.
Explanation:Internet banking lets customers perform transactions online, such as checking balances, transferring funds, and paying bills.
These actions are possible because banking systems are connected through computer networks.
Hence, the main idea is using computer networks to carry out banking operations.
Options B, C, and D describe related but narrower or different ideas, such as automation, security tokens, or ATM use.
Answer:A. applying computer networks in banking operation