Concept:REM is a BASIC keyword used to indicate a comment or remark in a program.
Explanation:REM is short for "remark".
In BASIC programming, a line that starts with REM is not meant to be executed.
The computer ignores the entire REM line during program run.
It exists only to add notes or explanations for anyone reading the code.
Thus, REM shows that the statement is a comment, not an executable instruction.
It is also not an output statement because it displays nothing on the screen.
Using REM helps make a program easier to understand and maintain.
Programmers often use comments to describe the purpose of a section of code.
Answer:C. comment