Answer:
Command line interface
Explanation:
Given that Command Line Interface requires a user to typed in commands accurately, otherwise a spelling error of the command will lead to failure or can break the system.
Also, by using command line interface requires a user to avoid a wrong instruction, otherwise the system may break and will require starting from the beginning.
Hence, Command-Line-Interface function has a steeper learning curve and can potentially break the system without careful use of its operations
