Answer:
The correct answer to use in filling in the gap is "Command languages interaction".
Step-by-step explanation:
Command languages interaction occurs when the user enters command which are not always remembered, the computer executes it (with feedback if necessary), then requests next command.
This implies that under command languages interaction, "Command prompts" are employed by users who enter in commands and maybe certain parameters that impact how the command is executed.
Therefore, the correct answer to use in filling in the gap is "Command languages interaction".