Explanation:

The four fundamental characteristics or functions of a computer are 'Data collection' (input), 'Data storage', 'Data processing', and 'Data output'. These define the entire data flow and operation of a computer system. Option (e) 'Data copy', while an operation a computer can perform, is typically considered a sub-function or a specific type of data manipulation that falls under 'Data processing' or 'Data storage management', rather than a distinct, overarching characteristic or primary function on the same level as the others. Therefore, 'Data copy' is the least fundamental characteristic among the choices.